This commit attempts to improve the mobile experience for
admin page header and subheader by automatically collapsing
all action buttons in these components into a DMenu when viewing
mobile.
This is done by using different "list" wrapper components and a
DMenu trigger and a DropdownMenu on mobile only, and uses has-block
to determine whether to render the DMenu trigger at all.
This also removes the `PluginOutlet` in `AdminPluginConfigPage`, it
was too inflexible for this `DropdownMenu` case, and since the `:actions`
were always rendering we couldn't rely on `has-block`. A new plugin API,
`registerPluginHeaderActionComponent`, has been introduced instead to
replace it.
This commit converts the current chat plugin UI into the
new "show plugin" UI already followed by AI and Gamification.
In the process, I also:
* Made a dedicated /new route to create new webhooks
* Converted the webhook form to FormKit
* Made some fixes and improvements to the `AdminPluginConfigPage`, `AdminPageHeader`,
and `AdminPageSubheader` generic components, so more plugins can
adopt the UI guidelines too. This includes adding a header outlet so plugins
can add action buttons to the plugin show page header.
* Fixes the submit button loading state for FormKit (by Joffrey)
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Co-authored-by: Joffrey JAFFEUX <j.jaffeux@gmail.com>
