Updated the migrations to indicate progress (Potential to base progress for the "processing" sections on the file size of the legacy database)
Updated the JobRunner to properly support concurrent queues for sending/receiving (other queues are still serial)
Added the typing indicator logic into the ConversationVC
Put code into SUKLegacy for connecting to the YDB database
Fixed a couple of minor UI bugs with the GalleryRailView
Updated the media gallery selection screen to use the appropriate system theme colouring (was painful to randomly swap from dark mode to like for one screen...)
Added an alert for when the database migration fails
Deleted the legacy migrations (manually applying any unapplied changes as part of the YDB to GRDB migration process)
Fixed a couple of bugs with search term highlighting (updated the logic to make the highlighted content follow similar logic to what terms would have actually matched)
Fixed a bug where info messages in search results weren't rendering correctly
Shifted some duplicate query code for global search into variables
Fixed a small bug where sending attachments could incorrectly result in the mentions UI being visible
Fixed a bug where quote content was appearing incorrectly
Consolidated the ShareExtension Item and the ConversationCell.ViewModel into one type (with a more-limited query) to remove duplicate code
Added back a missing asset (deleted a long time ago)
Updated to the latest version of GRDB
Fixed an issue with db reentrant behaviour with the Attachment upload function
Finished up the updated 'sendNonDurability' functions
Updated the share extension to load URL previews.
Updated the ThreadPickerVC to send plain text & URLs in the same way they are sent for normal messages.