feat: Add sync documentation for Android and iOS test coverage updates

Add comprehensive unit tests for Noise protocol and related components

feat: Add additional Android instrumentation tests to enhance test coverage

feat: Add instrumentation tests for FileUtils and DeviceUtils, enhancing test coverage

feat: Update Jacoco report configuration to exclude Bluetooth stack classes

Enhance testing and coverage for Bitchat application

feat: Add unit tests for FragmentManager fragment creation and handling, and enhance MessageHandler tests for various scenarios

feat: Add unit tests for FragmentManager fragment handling and GossipSyncManager payload size limits

feat: Update unit tests for FragmentManager, MessageHandler, and GossipSyncManager with additional scenarios and coverage improvements

feat: Add unit tests for FragmentManager cleanup and clearing functionality

feat: Add unit tests for MessageHandler file transfer handling and SecurityManager data cleanup

feat: Enhance unit tests for MessageHandler and SecurityManager with additional scenarios

feat: Add unit tests for MessageHandler and PeerManager, and implement SecurityManager tests

feat: Add comprehensive unit tests for MessageHandler, PeerManager, SecurityManager, NoiseSession, and GossipSyncManager functionalities

feat: Add unit tests for IdentityAnnouncement, VerificationService, SyncDefaults, ByteArrayExtensions, and NotificationIntervalManager functionality