Sorted out some more threading issues
Removed a redundant SyncPushTokensJob run
Fixed an issue where the NotificationServiceExtension could incorrectly setup the database before setting up it's context
Fixed a few warnings
Removed a bunch of legacy code
Refactored the MainAppContext from Objective C into Swift
Fixed an issue where returning the app from the background would result in the app staying permanently on the splash screen
Included a CRC32 implementation so we can drop the CryptoSwift dependenciy (using CryptoKit everywhere else)
Removed 'SocketRocket' (unused)
Removed the `xcode_14_3_workaround` post-install hook (fixed with CocoaPods 1.12.1)
Removed the `enable_fts5_support` post-install hook (enabled by default since GRDB 6.7.0 so redundant)
Removed the `enable_whole_module_optimization_for_crypto_swift` post-install hook (dropped CryptoSwift support)
Cleared out a bunch of headers from the Signal-Bridging-header file (direct imports instead to reduce incremental build sizes)
Deleted some unused code
Removed the legacy Theme code (replaced with SessionUIKit equivalents)
Removed the OWSOrphanDataCleaner (unused)
Removed the OWSReceiptType_Delivery from the OWSOutgoingReceiptManager (unused)
Removed the TSStorageKeys and TSStorageHeaders files (unused)
Removed the LKMessageIDCollection (unused - only had methods for deleting data from the collection)
Removed the OWSPrimaryStorageTrustedKeysCollection and OWSIdentityManager_QueuedVerificationStateSyncMessages (unused)
Removed collections and notifications from OWSProfileManager (unused)