* Allow MediaPickerScreen users to select the media selection mode (single or multiple)
* Fix cancellation
* Add support for multiple media URLs on the MediaUploadPreviewScreen.
* Support processing more URLs on the `MediaUploadingPreprocessor` and sending more on the `MediaUploadPreviewScreen`
* Add feature flag for `multipleAttachmentUploadEnabled`
* Add a label showing the current preview item index in the MediaUploadPreviewScreen
* Add support for dragging and dropping or pasting multiple items at the same time.
* Support sharing more than one file through the share extension.
* Limit the number of items that can be shared in one go to 5.
* Fix unit tests
* Fix incorrect fatal error when dealing with single selection media pickers.
* Document the `multipleAttachmentUploadEnabled` usage in the context of the MediaPicker.
* Use a task group for processing selected media in the photo library picker.
* Use a task group for processing multiple selected media in the MediaUploadingPreprocessor
* Switch the maximum number of items that can be shared to 10.
* Allow multiple items to be pasted at the same time.
* 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.
