Tracking: Inbox ID

[neekolas]

Clientside

• Derive Identity state from a history of Identity Updates #623
• Identity Update serialization and deserialization #635
• Identity Update Builder #624
• Implement signature verification for all known signature types #636
• Store GroupMembership in MLS state as a GroupContextExtension #625
• Adding and removing members using GroupMembership state #627
• Local database storage for IdentityUpdates #628
• Identity API Client #629
• Update commit validation to make use of GroupMemberships #630
• APIs in xmtp_mls for common identity actions #631
• Create credentials using inbox_id #674
• Validate credentials with inbox_id #675

Serverside

• Backend APIs for Identity Actions xmtp-node-go#369
• Expose API in MLS Validation Service for processing identity updates #622
• Support for reading and writing Key Packages using new Inbox ID credentials #646

Migration from old V3 identity

• Update identity SQLite database table to support inbox ID and new credentials
• Replace existing client creation methods with new ones that rely on inbox_id
• Update iOS and Android SDKs to create clients using these new methods, which will include inbox setup