- Introduced IEssentialsRoomFusionControllerFactory for creating Fusion Room Controller devices.
- Added IEssentialsRoomFusionControllerPropertiesConfig to define configuration properties for the Fusion Room Controller.
- Updated IFusionHelpRequest interface to include methods for cancelling and toggling help requests.
- Refactored RoomOnToDefaultSourceWhenOccupied to use IEssentialsRoomFusionController instead of EssentialsHuddleSpaceFusionSystemControllerBase.
- Modified EssentialsRoomBase to check for IEssentialsRoomFusionController in occupancy status provider.
Introduce `IFusionHelpRequest` interface for managing help requests, including `HelpRequestResponseFeedback` property and `SendHelpRequest` method. Enhance `EssentialsHuddleSpaceFusionSystemControllerBase` with new properties and methods to support help request tracking and management. Improve code organization and documentation throughout the affected files.
