Add a Light device type with a bulb icon

RGBController/RGBController.cpp

@@ -1418,6 +1418,8 @@ std::string device_type_to_str(device_type type)
         return "Headset Stand";
     case DEVICE_TYPE_GAMEPAD:
         return "Gamepad";
+    case DEVICE_TYPE_LIGHT:
+        return "Light";
     default:
         return "Unknown";
     }

RGBController/RGBController.h

@@ -116,6 +116,7 @@ enum
     DEVICE_TYPE_HEADSET,
     DEVICE_TYPE_HEADSET_STAND,
     DEVICE_TYPE_GAMEPAD,
+    DEVICE_TYPE_LIGHT,
     DEVICE_TYPE_UNKNOWN
 };