- Implemented `WebSocketsGateway` for handling Socket.IO connections, events, and rooms.
- Added `WebSocketsService` to act as a facade for emitting WebSocket events (projects, groups, notifications).
- Registered `WebSocketsModule` and integrated it into `AppModule`.
- Enabled real-time updates in `ProjectsService` and `GroupsService` with relevant WebSocket events (create, update, delete, collaborator/group actions).
Added endpoints to manage collaborators in `ProjectsController`:
- Add collaborator
- Remove collaborator
- Get project collaborators
Updated `ProjectsService` with corresponding methods and enhanced `checkUserAccess` to validate user access as owner or collaborator. Included unit tests for new functionality in controllers and services.
Added new authentication strategies (JWT and GitHub OAuth), guards, and controllers. Implemented database module, schema with relations, and group management features, including CRD operations and person-to-group associations. Integrated validation and CORS configuration.
