post action feedback is the mechanism in which we provide visual feedback
to the user when a post action is clicked, in cases where the action is a
background (hidden to user) for example: copying text to the clipboard
Core uses this to share post links, but other plugins (for example: AI) use
this to share post transcripts via the clipboard.
This adds a proper plugin API to consume this functionality
`addPostMenuButton` can provide a builder that specified a function as the action.
This function will be called with an object that has both the current post and a method for showing feedback.
This new navbar component is used for every navbar in chat, full page or drawer, and any screen.
This commit also uses this opportunity to correctly decouple drawer-routes from full page routes. This will avoid having this kind of properties in components: `@includeHeader={{false}}`. The header is now defined in the parent template using a navbar. Each route has now its own template wrapped in a div of the name of the route, eg: `<div class="c-routes-threads">..</div>`.
The navbar API:
```gjs
<Navbar as |navbar|>
<navbar.BackButton />
<navbar.Title @title="Foo" />
<navbar.ChannelTitle @channel={{@channel}} />
<navbar.Actions as |action|>
<action.CloseThreadButton />
</navbar.Actions>
</navbar>
```
The full list of components is listed in `plugins/chat/assets/javascripts/discourse/components/navbar/index.gjs` and `plugins/chat/assets/javascripts/discourse/components/navbar/actions.gjs`.
Visually the header is not changing much, only in drawer mode the background has been removed.
This commit also introduces a `<List />` component to facilitate rendering lists in chat plugin.
Float-kit elements (menus/tooltips) are positioned where they should be by setting an inline `left` property in JavaScript when they're rendered. For some reasons, we also set `left: 0` on float-kit elements here:
25d9927785/app/assets/stylesheets/common/float-kit/d-menu.scss (L11-L15)
This property is overridden by the inline property that the library sets in JavaScript. However, in RTL mode, all of our scss files are flipped where everything left becomes right and vice versa. In this case, the `left: 0` property in the scss file above becomes `right: 0`.
This results in a conflict specific to RTL mode where both the `left` and `right` properties are defined on the same absolute-positioned element; the `right` property will always be set to 0 because it comes from the (flipped) scss file above, and the inline `left` property will be set to some px amount determined in JavaScript.
The `right` property will take precedence over the inline `left` property due to the page being right-to-left (source: https://developer.mozilla.org/en-US/docs/Web/CSS/right#description) and this causes float-kit elements to incorrectly always stick to the right.
This commit removes the `left: 0` property altogether for float-kit elements from our scss files. It's not clear from git history why the property was added, and removing it doesn't seem to cause any issues.
Meta topic: https://meta.discourse.org/t/positioning-issues-with-rtl-locales-after-recent-updates/280220?u=osama
In modern hljs, languages should be targetted with `lang-` prefixes. These selectors haven't worked in Discourse for a long time, so let's drop them to reduce confusion
