message: Add statusAvailable param to constants
diff: @@ -52,6 +52,7 @@ const char kSupportedLights[] = "supportedLights";
  // LightControlCapabilities
  const char kName[] = "name";
  +const char kStatusAvailable[] = "statusAvailable";
  const char kDensityAvailable[] = "densityAvailable";
  const char kRGBColorSpaceAvailable[] = "rgbColorSpaceAvailable";
  