Commit Graph

101 Commits

Author SHA1 Message Date
chapoi
cac5592251
UX: flat design for thread list (#23821)
* UX: thread list flat design

* UX: thread list mobile
2023-10-06 21:56:36 +02:00
chapoi
8823b5e504
UX: fix overflow channel row + mobile remove styling tweak (#23611)
* UX: fix missing overflow ellipsis

* cleanup double declaration

* UX: add missing border-radius

*UX: delete icon animation tweak
2023-09-15 14:06:31 +02:00
chapoi
02de223da8
UX: chat-channel-row alignment (#23607) 2023-09-15 10:09:50 +02:00
Kris
98c8dcecba
A11Y: disable non-essential CSS animations for reduced-motion users (#23571) 2023-09-14 17:31:43 -04:00
Joffrey JAFFEUX
ae27beb01a
UI: improves remove channel animation (#23585)
Co-authored-by: chapoi <101828855+chapoi@users.noreply.github.com>
2023-09-14 18:48:29 +02:00
Joffrey JAFFEUX
b8d5f951f6
UX: implements swipe on row channel (#23436)
On mobile swiping a channel row will now show a "Remove" option. Holding this to the end will now remove this row from your list of followed direct message channels.

Co-authored-by: chapoi <101828855+chapoi@users.noreply.github.com>
2023-09-11 14:51:13 +02:00
chapoi
0ce0bcd8ff
Remove border radius from chat (#22437)
* add border-radius-large variable

* UX: replace chat border-radius with variable
2023-07-10 15:07:38 +02:00
Joffrey JAFFEUX
9830c40386
DEV: makes chat modals use the new <DModal /> component (#22495)
This commit also standardize the naming pattern of modals: `<Chat::Modal::FooBar />` and changes css class accordingly.

Co-authored-by: David Taylor <david@taylorhq.com>
2023-07-10 13:43:33 +02:00
chapoi
c2b98802ea
UX: message creator spacing and sizing on mobile + fix text wrapping (#22508)
* UX: mobile more spacing and bigger

* UX: align text better

* UX: ellipsis and pill bg colour

* UX: disabled-chat msg styling
2023-07-10 12:27:26 +02:00
Joffrey JAFFEUX
d75d64bf16
FEATURE: new jump to channel menu (#22383)
This commit replaces two existing screens:
- draft
- channel selection modal

Main features compared to existing solutions
- features are now combined, meaning you can for example create multi users DM
- it will show users with chat disabled
- it shows unread state
- hopefully a better look/feel
- lots of small details and fixes...

Other noticeable fixes
- starting a DM with a user, even from the user card and clicking <kbd>Chat</kbd> will not show a green dot for the target user (or even the channel) until a message is actually sent
- it should almost never do a full page reload anymore

---------

Co-authored-by: Martin Brennan <mjrbrennan@gmail.com>
Co-authored-by: Jordan Vidrine <30537603+jordanvidrine@users.noreply.github.com>
Co-authored-by: chapoi <101828855+chapoi@users.noreply.github.com>
Co-authored-by: Mark VanLandingham <markvanlan@gmail.com>
2023-07-05 18:18:27 +02:00
Jarek Radosz
a6bd3994f3
UX: Align chat separators, increase mobile chat width (#22298) 2023-06-27 18:49:45 +02:00
chapoi
802fb3b194
UX: chat message thread indicator improvements (#22224)
- gridified the thread message indicator, alleviating some problems with positioning and overflow
participant avatars will overlap/smush on smaller size and mobile
- the excerpt went from 3 > 2 lines of wrapping on smaller size, still 1 line on large size
- dropped the copy of "last reply"
- fixed wrong line height
- moved the "x replies" over to the right near the participants, as that makes more sense
- using a bubble to indicate other participants, instead of copy

This PR introduces the @container query, which is experimental. Nothing will break when it's being viewed in a not-supported browser, but it will be less elegant.
2023-06-26 14:47:13 +02:00
Joffrey JAFFEUX
7dafd275ac
FIX: various mobile chat improvements (#22132)
- FIX: improves reactions and thread indicator touch event on mobile
These "buttons" are located inside a scroll list which makes them very specific. The general idea is to ensure these events are passive and are not bubbling to the parent.
- DEV: moves state on top level message node
- FIX: ensures popover arrow has the correct border
- FIX: makes a message expanded by default
- FIX applies the same ios scroll fix on thread and channel
- UI: better active/hover state for thread indicator
- UI: attempts to follow more closely our BEM naming scheme
- FIX: reduces bottom padding on message with thread indicator and user info hidden
- UI: add padding for first message in thread
- FIX: prevents actions backdrop to open thread
- UI: makes thread indicator resizable
2023-06-16 11:36:43 +02:00
Joffrey JAFFEUX
79a260a6bb
FIX: allows selection of messages in threads (#22119)
This commit fixes the selection of message in threads and also applies various refactorings
- improves specs and especially page objects/components
- makes the channel/thread panes responsible of the state
- adds an animationend modifier
- continues to follow the logic of "state" should be displayed as data attributes on component by having a new `data-selected` attribute on chat messages
2023-06-15 11:27:31 +02:00
Martin Brennan
f75ac9da30
FEATURE: Thread indicator improvements and participants (#21909)
This commit adds the initial part of thread indicator improvements:

* Show the reply count, last reply date and excerpt,
and the participants of the thread's avatars and
count of additional participants
* Add a participants component for the thread that
can be reused for the list
* Add a query class to get the thread participants
* Live update the thread indicator more consistently
with the last reply and participant details
image image

In subsequent PRs we will cache the participants since
they do not change often, and improve the thread list
further with participants.

This commit also adds a showPresence boolean (default
true) to ChatUserAvatar, since we don't want to show the
online indicator for thread participants.

---------

Co-authored-by: chapoi <charlie@discourse.org>
2023-06-15 10:49:27 +10:00
Kris
e0f848c2ea
REFACTOR: move shadow vars to css custom props (#22094) 2023-06-13 16:38:31 -04:00
chapoi
fca6c1836c
UX: Chat unread indicator refactor (#22040)
* move the chat unread indicator to top to match the profile avatar indicator
* add white border to profile avatar indicator (badge notification) to match chat indicator and userstatus styling
* change `.urgent` to BEM
* congregate all styling into mixin
  * update chat index to use mixin
  * update thread indicator to use mixin
  * update header indicator to use mixin

---------

Co-authored-by: Joffrey JAFFEUX <j.jaffeux@gmail.com>
Co-authored-by: Martin Brennan <martin@discourse.org>
2023-06-12 14:33:45 +10:00
Joffrey JAFFEUX
89d7b1861d
FIX: various mobile optimizations (#22043)
* FIX: increases resize observer throttle delay
25ms is not necessary and was sometimes causing jankyness.

* FIX: removes ios momentum fix delay
Instead of a 50ms, simply use next+schedule("afterRender") to attempt to have the shortest delay possible.

* FIX: backdrop event propagation
Prevents backdrop touch to propagate to underlying channel/thread.

* UX: adds is-active class to container of active message
This change allows to keep the background on the active message while the actions menu is displayed.

* FIX: prevents skip-link to be selected on press

* UX: allows to close actions menu instantly
The backdrop should always receive events, we don't need to wait for the menu to be fully displayed.

* UI: adds spacing between last message and composer

* UI: makes backdrop less dark

* FIX: makes events passive on long-press modifier
2023-06-09 17:37:26 +02:00
Joffrey JAFFEUX
aa2270e4c3
FIX: disables pointer events while showing menu (#22009)
This commit attempts to have a bullet proof solution to the following case:

- long press on message (finger is still pressed)
- menu appears
- a button is now at finger location
- user releases finger
- a click is triggered on the button

Classic event canceling solution won't work here for performance reasons as we need the event to be passive in a scroll list.
2023-06-08 19:35:08 +02:00
Joffrey JAFFEUX
31feb65167
UI: correctly adds spacing for selection-management (#22006)
On iOS the safe area was not applied correctly.
2023-06-08 17:37:28 +02:00
Joffrey JAFFEUX
6513ca69da
UX: improves chat message long press and touch (#21984)
This commit attempts to refactor our long press logic to make it more resilient and precise.

With this improvement two very UX/UI changes have been made:
- scale animation on long press
- prevents click on reaction to propagate to the message which would cause the active state of the message to trigger
2023-06-08 08:21:32 +02:00
Joffrey JAFFEUX
f45d1e6791
UX: implements new composer design (#21588)
This is only the first steps of a redesign

- redesigns the buttons to have a larger hitzone
- generally bigger composer
- clicking near textarea focuses the input
- relies on the fact that safe-area-inset-bottom is set globally and doesn’t need to be set in sub components
2023-05-16 17:17:12 +02:00
Joffrey JAFFEUX
5ce0697348
FIX: limits max height to viewport on channel only (#21539)
Before this commit chat was applying a fixed height on everything under the `/chat` route. It's only really needed on the channel page with the composer at the bottom of the page.

This commits makes the following changes:
- moves height limitation from `#main-outlet-wrapper` to `.chat-channel`
- makes browse channel page and members list page full height and rely on main document scrollbar
- adds height computation for draft header and direct message creator block to ensure the height is correct when creating a draft channel
- makes chat index full height to rely on the browser scrollbar. As a result the <kbd> + </kbd> button used on mobile to create a direct message as been moved out of `<ChannelsList>` into the chat index template
- sidebar height was relying on chat setting a max height, as a result the height computation of sidebar has been changed to work correctly, especially with an opened keyboard on mobile or ipad
2023-05-15 11:46:33 +02:00
Martin Brennan
91c5658e9b
FIX: Handle deleted original message for thread index (#21470)
Since we have channel message retention which deletes
messages, we can end up with cases where the thread
is still around but the message is deleted. We will
handle the cascade delete in a different commit --
for now we will ensure the thread list lookup handles
this case and doesn't error.
2023-05-10 13:58:15 +02:00
Joffrey JAFFEUX
c6b43ce68b
FEATURE: Thread list initial UI (#21412)
This commit adds an initial thread list UI. There are several limitations
with this that will be addressed in future PRs:

* There is no MessageBus reactivity, so e.g. if someone edits the original
   message of the thread it will not be reflected in the list. However if
   the thread title is updated the original message indicator will be updated.
* There is no unread functionality for threads in the list, if new messages
   come into the thread there is no indicator in the UI.
* There is no unread indicator on the actual button to open the thread list.
* No pagination.

In saying that, this is the functionality so far:

* We show a list of the 50 threads that the user has most recently participated
   in (i.e. sent a message) for the channel in descending order.
* Each thread we show a rich excerpt, the title, and the user who is the OM creator.
* The title is editable by staff and by the OM creator.
* Thread indicators show a title. We also replace emojis in the titles.
* Thread list works in the drawer/mobile.
2023-05-10 11:42:32 +02:00
Joffrey JAFFEUX
6f26732551
UI: thread panel sizing/spacing on mobile (#21440)
The side panel on mobile is full screen. As a result we need to tweak spacing and sizing to make it correctly full screen like the channel.
2023-05-09 00:17:42 +02:00
chapoi
f29f131387
UX: composer use BEM + small tweaks to enabled/disabled styling (#21246)
- using BEM notation
- making animation linear instead of default ease
- small tweaks to composer state (disabled/send-disabled/send-enabled)
- fixing bug with disabled composer on mobile
2023-04-28 10:24:49 +02:00
Joffrey JAFFEUX
bf886662df
UX: improves composer and thread panel (#21210)
This pull request is a full overhaul of the chat-composer and contains various improvements to the thread panel. They have been grouped in the same PR as lots of improvements/fixes to the thread panel needed an improved composer. This is meant as a first step.

### New features included in this PR

- A resizable side panel
- A clear dropzone area for uploads
- A simplified design for image uploads, this is only a first step towards more redesign of this area in the future

### Notable fixes in this PR

- Correct placeholder in thread panel
- Allows to edit the last message of a thread with arrow up
- Correctly focus composer when replying to a message
- The reply indicator is added instantly in the channel when starting a thread
- Prevents a large variety of bug where the composer could bug and prevent sending message or would clear your input while it has content

### Technical notes

To achieve this PR, three important changes have been made:

- `<ChatComposer>` has been fully rewritten and is now a glimmer component
- The chat composer now takes a `ChatMessage` as input which can directly be used in other operations, it simplifies a lot of logic as we are always working a with a `ChatMessage`
- `TextareaInteractor` has been created to wrap the existing `TextareaTextManipulation` mixin, it will make future migrations easier and allow us to have a less polluted `<ChatComposer>`

Note ".chat-live-pane" has been renamed ".chat-channel"

Design for upload dropzone is from @chapoi
2023-04-25 10:23:03 +02:00
Joffrey JAFFEUX
f55266e1ca
UX: chat mobile tweaks (#21041)
- rounded active style for messages
- better active state on chat message actions rows
- ensures long press on a message is not selecting text
- slightly improved messages actions animation and background fading
- ensures chat emoji picker is not cutoff on right side
- removes old legacy code related to hovered message
2023-04-11 09:03:12 +02:00
Joffrey JAFFEUX
5c2c1bf9a7
FIX: correct backdrop on mobile for the emoji picker (#21005) 2023-04-06 15:51:40 +02:00
Martin Brennan
ea548292bc
DEV: Refactoring chat message actions for ChatMessage component usage in thread panel (#20756)
This commit is a major overhaul of how chat message actions work, to make it so they are reusable between the main chat channel and the chat thread panel, as well as many improvements and fixes for the thread panel.

There are now several new classes and concepts:

* ChatMessageInteractor -  This is initialized from the ChatMessage, ChatMessageActionsDesktop, and ChatMessageActionsMobile components. This handles permissions about what actions can be done for each
message based on the context (thread or channel), handles the actions themselves (e.g. copyLink, delete, edit),
and interacts with the pane of the current context to modify the UI
* ChatChannelThreadPane and ChatChannelPane services - This represents the UI context which contains the
messages, and are mostly used for state management for things like message selection.
* ChatChannelThreadComposer and ChatChannelComposer - This handles interaction between the pane, the
message actions, and the composer, dealing with reply and edit message state.
* Scrolling logic for the messages has now been moved to a helper so it can be shared between the main channel pane and the thread pane
* Various improvements with the emoji picker on both mobile and desktop. The DOM node of each component is now located outside of the message which prevents a large range of issues.

The thread panel now also works in the chat drawer, and the thread messages have less
actions than the main panel, since some do not make sense there (e.g. moving messages to
a different channel). The thread panel title, excerpt, and message sender have also been removed
for now to save space.

This gives us a solid base to keep expanding on and fixing up threads. Subsequent PRs will
make the thread MessageBus subscriptions work and disable echo mode
for the initial release of threads.

Co-authored-by: Joffrey JAFFEUX <j.jaffeux@gmail.com>
2023-04-06 15:19:52 +02:00
chapoi
6e2fd7a451
UX: Chat channel title overflow ellipsis fixes (#20956)
* UX: add correct class

* UX: prioritise name over user messages when truncating

* UX: add missing overflows to enable ellipsis
2023-04-04 12:44:36 +02:00
Joffrey JAFFEUX
1219f41c68
UX: multiple minor improvements (#20917)
- Raises the scroll distance to 250px instead of 100px to show the arrow down button
- Always have a margin on drawer when showing channel list, removes this margin when the scrollbar is apparent
- Makes all scrollbar used in chat look the same through the chat-scrollbar mixin
- Ensures hover state is not persistent on channel row in mobile
- Makes the channel row full width on mobile
2023-04-03 10:46:38 +02:00
Joffrey JAFFEUX
12a18d4d55
DEV: properly namespace chat (#20690)
This commit main goal was to comply with Zeitwerk and properly rely on autoloading. To achieve this, most resources have been namespaced under the `Chat` module.

- Given all models are now namespaced with `Chat::` and would change the stored types in DB when using polymorphism or STI (single table inheritance), this commit uses various Rails methods to ensure proper class is loaded and the stored name in DB is unchanged, eg: `Chat::Message` model will be stored as `"ChatMessage"`, and `"ChatMessage"` will correctly load `Chat::Message` model.
- Jobs are now using constants only, eg: `Jobs::Chat::Foo` and should only be enqueued this way

Notes:
- This commit also used this opportunity to limit the number of registered css files in plugin.rb
- `discourse_dev` support has been removed within this commit and will be reintroduced later

<!-- NOTE: All pull requests should have tests (rspec in Ruby, qunit in JavaScript). If your code does not include test coverage, please include an explanation of why it was omitted. -->
2023-03-17 14:24:38 +01:00
Joffrey JAFFEUX
6b0aeced7e
DEV: rework the chat-live-pane (#20519)
This PR is introducing glimmer usage in the chat-live-pane, for components but also for models. RestModel usage has been dropped in favor of native classes.

Other changes/additions in this PR:

sticky dates, scrolling will now keep the date separator of the current section at the top of the screen
better unread management, marking a channel as unread will correctly mark the correct message and not mark the whole channel as read. Tracking state will also now correctly return unread count and unread mentions.
adds an animation on bottom arrow
better scrolling behavior, we should now always correctly keep the scroll position while loading more
reactions are now more reactive, and will update their tooltip without needed to close/reopen it
skeleton has been improved with placeholder images and reactions
when making a reaction on the desktop message actions, the menu won't move anymore
simplify logic and stop maintaining a list of unloaded messages
2023-03-03 13:09:25 +01:00
Joffrey JAFFEUX
435761ef58
Revert "DEV: rework the chat-live-pane (#20511)" (#20514)
This reverts commit 10e1831139.
2023-03-02 20:20:39 +01:00
Joffrey JAFFEUX
10e1831139
DEV: rework the chat-live-pane (#20511)
This PR is introducing glimmer usage in the chat-live-pane, for components but also for models. RestModel usage has been dropped in favor of native classes.

Other changes/additions in this PR:

- sticky dates, scrolling will now keep the date separator of the current section at the top of the screen
- better unread management, marking a channel as unread will correctly mark the correct message and not mark the whole channel as read. Tracking state will also now correctly return unread count and unread mentions.
- adds an animation on bottom arrow
- better scrolling behavior, we should now always correctly keep the scroll position while loading more
- reactions are now more reactive, and will update their tooltip without needed to close/reopen it
- skeleton has been improved with placeholder images and reactions
- when making a reaction on the desktop message actions, the menu won't move anymore
- simplify logic and stop maintaining a list of unloaded messages
2023-03-02 19:46:03 +01:00
Joffrey JAFFEUX
31480bde92
Revert "DEV: rework the chat-live-pane" (#20510)
This reverts commit 67c0498f64.
2023-03-02 16:59:11 +01:00
Joffrey JAFFEUX
67c0498f64
DEV: rework the chat-live-pane
This PR is introducing glimmer usage in the chat-live-pane, for components but also for models. RestModel usage has been dropped in favor of native classes.

Other changes/additions in this PR:

- sticky dates, scrolling will now keep the date separator of the current section at the top of the screen
- better unread management, marking a channel as unread will correctly mark the correct message and not mark the whole channel as read. Tracking state will also now correctly return unread count and unread mentions.
- adds an animation on bottom arrow
- better scrolling behavior, we should now always correctly keep the scroll position while loading more
- reactions are now more reactive, and will update their tooltip without needed to close/reopen it
- skeleton has been improved with placeholder images and reactions
- when making a reaction on the desktop message actions, the menu won't move anymore
- simplify logic and stop maintaining a list of unloaded messages
2023-03-02 16:34:25 +01:00
chapoi
8465f53a35
UX: userstatus limit handling in UI (#20343)
* UX: handle long userstatus in menupanel

* UX: remove margin on userstatus emoji

* UX: change emoji sise of user status in DM creator

* FIX: user status overflow on chat index
2023-02-17 06:54:56 +01:00
Joffrey JAFFEUX
7391f8e077
FIX: correctly account for ipad footer nav height (#20334)
This code also removes duplicated code in chat which doesn’t seem necessary anymore.
2023-02-16 16:49:17 +01:00
Martin Brennan
c767a38086
FIX: Overflowing chat content in main-chat-outlet grid (#20301)
Follow up to 82b4a53d29

On mobile, we just need to add `min-width: 0` to
`chat-live-pane` so it will not overflow the grid
defined in `main-chat-outlet.chat-view`.

The overflow could be triggered by:

1. Replying on mobile to a really long chat message
2. Uploading > 2 files

Both of these situations are fixed.
2023-02-15 12:48:18 +10:00
Martin Brennan
07ab20131a
FEATURE: Chat side panel with threads initial skeleton (#20209)
This commit introduces the skeleton of the chat thread UI. The
structure of the components looks like this. Its done this way
so the side panel can be used for other things as well if we wish,
not just for threads:

```
.main-chat-outlet
   <ChatLivePane />
   <ChatSidePanel>
     <-- rendered with {{outlet}} -->
     <ChatThread />
   </ChatSidePanel>
```

Later on the `ChatThreadList` will be rendered here as well.
Now, when you go to a channel you can open a thread by clicking
on either the Open Thread message action button or by clicking on
the reply indicator. This will take you to a route like `chat/c/:slug/:channelId/t/:threadId`.
This works on mobile as well.

This commit includes basic serializers and routes for threads,
as well as a new `ChatThreadsManager` service in JS that caches
threads for a channel the same way the channel threads manager does.

The chat messages inside the thread are intentionally left out
until a later PR.

**NOTE: These changes are gated behind the site setting enable_experimental_chat_threaded_discussions
and the threading_enabled boolean on a ChatChannel**
2023-02-14 11:38:41 +10:00
Joffrey JAFFEUX
2644a4d303
DEV: removes chat-channel-settings-row (#19650)
This is dead code which should have been removed when `chat-settings-settings-modal` has been removed.
2022-12-29 13:50:01 +01:00
Joffrey JAFFEUX
d2e24f9569
DEV: start glimmer-ification and optimisations of chat plugin (#19531)
Note this is a very large PR, and some of it could have been splited, but keeping it one chunk made it to merge conflicts and to revert if necessary. Actual new code logic is also not that much, as most of the changes are removing js tests, adding system specs or moving things around.

To make it possible this commit is doing the following changes:

- converting (and adding new) existing js acceptances tests into system tests. This change was necessary to ensure as little regressions as possible while changing paradigm
- moving away from store. Using glimmer and tracked properties requires to have class objects everywhere and as a result works well with models. However store/adapters are suffering from many bugs and limitations. As a workaround the `chat-api` and `chat-channels-manager` are an answer to this problem by encapsulating backend calls and frontend storage logic; while still using js models.
- dropping `appEvents` as much as possible. Using tracked properties and a better local storage of channel models, allows to be much more reactive and doesn’t require arbitrary manual updates everywhere in the app.
- while working on replacing store, the existing work of a chat api (backend) has been continued to support more cases.
- removing code from the `chat` service to separate concerns, `chat-subscriptions-manager` and `chat-channels-manager`, being the largest examples of where the code has been rewritten/moved.

Future wok:
- improve behavior when closing/deleting a channel, it's already slightly buggy on live, it's rare enough that it's not a big issue, but should be improved
- improve page objects used in chat
- move more endpoints to the API
- finish temporarily skipped tests
- extract more code from the `chat` service
- use glimmer for `chat-messages`
- separate concerns in `chat-live-pane`
- eventually add js tests for `chat-api`, `chat-channels-manager` and `chat-subscriptions-manager`, they are indirectly heavy tested through system tests but it would be nice to at least test the public API

<!-- NOTE: All pull requests should have tests (rspec in Ruby, qunit in JavaScript). If your code does not include test coverage, please include an explanation of why it was omitted. -->
2022-12-21 13:21:02 +01:00
chapoi
b83d9fa802
UX: chat index refactor (#19264)
* Refactor: split out chat index files

* Refactor: is-online offset
2022-12-01 14:56:04 +01:00
Keegan George
7a8e018965
UX: reworks channel index (drawer and mobile) (#18892)
- Multiple style improvements
- adds last sent message date to the view

Co-authored-by: chapoi <charlie@discourse.org>
Co-authored-by: Joffrey JAFFEUX <j.jaffeux@gmail.com>
2022-11-28 18:38:05 +01:00
Joffrey JAFFEUX
66130dc8c1
REFACTOR: handles every chat resource as an URL (#18961)
- Note this is also tweaking the UI a little bit as we are now using links/buttons in the header as needed
- It disables the find ideal channel in drawer mode, if loading `/chat` in drawer mode it will either reopen at the last position or just stay on index
2022-11-11 06:39:15 +01:00
Joffrey JAFFEUX
07e1b0591f
REFACTOR: chat-msgactions (#18969)
- s/chat-msg-actions/chat-message-actions
- s/chat-msgactions-hover/chat-message-actions-container
- creates dedicated css files for this component
- removes useless code
- removes grayscale
2022-11-10 15:08:14 +01:00
chapoi
091d83af60
UX: Chat index tweaks (#18905)
- rounded avatar
- cut off avatar
- no index background
2022-11-07 12:26:46 +01:00
Roman Rizzi
0a5f548635
DEV: Move discourse-chat to the core repo. (#18776)
As part of this move, we are also renaming `discourse-chat` to `chat`.
2022-11-02 10:41:30 -03:00