* Define the shared EventTile shell contract
* Create a functional shared shell skeleton
* Implement the thread rendering branch
* Implement notification and threads-list branches
* Implement file and default timeline branches
* Add shared stories and complete shell tests
* Adding state flags, stories and styling
* Correct DOM order for IRC branch
* Refine EventTileView Storybook shell and fixtures
* Fix the room story for modern layout
* Fix Bubble layout
* Fix IRC layout
* Fix ThreadsList and Thread
* Fix File and Notification
* Cleanup of stories and styling
* Fix lint errors
* Added baseline screenshots
* Rename to avoid knip errors
* Avoid the knip error
* Fix test fail on click
* Use separate div wrappers for slots instead of relying on cloning components.
* Renamed names for slot classes
* Changed to conditional state classes
* Change layout and shape variants to classes
* Clean up and reorder for better readability
* Fix Sonar issues
* Fix Sonar issues