* Add linter rules for import order and type member delimiters
* Remove unneeded group
* Group all app/* imports before the internal imports
* Move app/ imports before parent imports
* Separate @node_modules imports into a different group
* Substitute app paths by aliases
* Fix @node_modules import order and add test related modules
* Add aliases for types and test, and group import types
* GH-13222: Shows an alert when you are removed from the channel that you are currently viewing
* GH-13222: Removed channel alert improved text
Co-authored-by: Mattermod <mattermod@users.noreply.github.com>