This will send the item to the rooms in order they were chosen and only deep link
into the target room if single, otherwise it will just dismiss the forwarding screen
after sending.
* Setup simple share extension
* Switch the app url scheme to be the full bundle identifier
* Setup a share extension that show a SwiftUI view, uses rust tracing and redirects to the hosting aplication
* Move media as json through the custom scheme into the main app and deep link into the media upload preview screen
* Fix message forwarding and global search screen room summary provider filtering.
* Tweak the message forwarding and global search screen designs.
* Add a room selection screen to use after receiving a share request from the share extension
* Fix share extension entitlements
* Share the temporary directory between the main app and the extensions; rename the caches one.
* Remove the no longer needed notification avatar flipping fix.
* Extract the placeholder avatar image generator from the NSE
* Nest `AvatarSize` within the new `Avatars` enum
* Donate an `INSendMessageIntent` to the system every time we send a message so they appear as share suggestions
* Support suggestions in the share extension itself
* Improve sharing animations and fix presentation when room already on the stack
* Clear all routes when sharing without a preselected room.
* Fix broken unit tests
* Various initial tweaks following code review.
* Correctly clean up and dismiss the share extension for all paths.
* Move the share extension path to a constants enum
* Rename UserSessionFlowCoordinator specific share extension states and events
* Add UserSession and Room flow coordinator share route tests
* Tweak the share extension logic.
* Fixes 1864 - Message forwarding room list filtering and pagination problems
* Fix SwiftFormat redundant closures body error
* Prevent crashes when writing to the localization bundle cache from different threads
* Fix unit tests
* Fix unit tests
* Address PR comments
* Add support for message forwarding
* Move the TimelineProvider within the RoomProxy to avoid it going out of sync and have it automatically register for timeline updates on init
* Implement single selection form button style for message forwarding
* Add searching and filter out the source room from the list
* Fixed emoji screen initial search bar height
* Add view models tests
* Add changelog
* Update strings
* Tweaks following code review