Fixed an issue where the app settings were updating immediately making them seem to
Updated GRDB to version 6.1 and SQLCipher to 4.5.2
Added a method which allows for inserting into the database while omitting columns which exist in the object but not in the database (so allow for old migrations to run with less issues)
Updated all the migrations to use the migration safe insert method
Removed some ObjC support extension functions
Created the ThemeManager and the system to control the dynamic theming
Started updating the main settings screens
Added the AppearanceViewController and connected it to the ThemeManager
Started adding theme values
Started applying theme values throughout
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)
Cleaned up the creation of the GRDBStorage instance
Fixed an issue where the launch screen wasn't setting it's background colour based on the system setting
Renamed the GRDBStorageError to StorageError (in preparation of legacy 'Storage' relocation)
Consolidated the two Environment classes (in Swift)
Refactored the AppSetup class to Swift
Changed the min OS version to iOS 13.0 (support for 'Identifiable')
Removed the alternate approaches to fetching the userKeyPair and userPublicKeyHexString (no consistently routed through the caching method)
Migrated the 'OWSIdentityManager' logic to use the new 'Identity' type
Added the 'Setting' table and got the pattern working fairly nicely (unfortunately there isn't a good way to avoid key collision without proper enums)
Updated the SessionSnodeKit to migration it's data from YDB to GRDB
Updated the SessionSnodeKit to use GRDB throughout it's logic
Setup a migration pattern
Setup the database configuration and security
Started defining the database schema
Started working on the migrations for SessionSnodeKit
