重构inspector！

Assets/Scripts/DynamicUI/DynamicUIElements/Simple/DynamicUIHintText.cs

@@ -23,7 +23,7 @@ namespace Ichni.Editor
             Observable.EveryUpdate().Subscribe(_ => text.text = content()).AddTo(gameObject);
         }
 
-        public override void AddListenerFunction(UnityAction action)
+        public override DynamicUIElement AddListenerFunction(UnityAction action)
         {
             throw new System.NotImplementedException();
         }