make ILocalSingletonWithUpdate.LateUpdate with default empty implementation

Author: RevenantX

LiteEntitySystem/ILocalSingleton.cs

@@ -9,6 +9,6 @@ public interface ILocalSingletonWithUpdate : ILocalSingleton
     {
         void Update(float dt);
         void VisualUpdate(float dt);
-        void LateUpdate(float dt);
+        void LateUpdate(float dt) {}
     }
 }