- Implemented TurnOn, TurnOff, and Toggle methods in the gRPC client for switch control. - Added corresponding methods in the CommandApp to handle user commands for turning switches on, off, and toggling. - Created unit tests for the new switch control methods in CommandApp and SwitchApp. - Updated the HAGateway interface to include switch control methods. - Enhanced the SwitchGRPC service to handle switch control requests and return appropriate responses. - Added integration tests for the switch service to ensure correct behavior and error handling.