improve yeelight further

Author: Aytackydln

Project-Aurora/Project-Aurora/Devices/YeeLight/YeeLightState.cs

@@ -17,6 +17,7 @@ protected static Task<bool> StateTask
                 _stateTask.Wait();
                 _stateTask = value;
             }
+            get => _stateTask;
         }
 
         void InitState();
@@ -71,13 +72,15 @@ public IYeeLightState Update(Color color)
             return newState;
         }
 
-        private void TurnOff()
+        private async void TurnOff()
         {
+            await IYeeLightState.StateTask;
             _lights.ForEach(device => device.SetPower(Constants.PowerStateParamValues.OFF));
         }
 
-        private void TurnOn()
+        private async void TurnOn()
         {
+            await IYeeLightState.StateTask;
             _lights.ForEach(device => device.SetPower(Constants.PowerStateParamValues.ON));
         }
     }