Implement DALI Bridge Engine and Model Management

- Added `bridge.cpp` to handle DALI bridge operations including model management, command execution, and response formatting.
- Introduced `bridge_model.cpp` for defining bridge models, value transformations, and JSON serialization/deserialization.
- Created `bridge_provisioning.cpp` for managing bridge configuration storage and retrieval using NVS on ESP platform.
- Enhanced `gateway_cloud.cpp` to integrate DALI bridge requests and responses with cloud communication.
- Introduced `modbus_bridge.cpp` to handle Modbus-specific operations and register management.
- Implemented utility functions for converting between DaliValue and cJSON formats.
- Added error handling and metadata management in bridge responses.

include/dt8.hpp

@@ -11,6 +11,7 @@ class ColorStatus {
  public:
   explicit ColorStatus(int status) : status_(status) {}
 
+  int raw() const { return status_; }
   bool xyOutOfRange() const { return (status_ & 0x01) != 0; }
   bool ctOutOfRange() const { return (status_ & 0x02) != 0; }
   bool autoCalibrationActive() const { return (status_ & 0x04) != 0; }