refactor: ContentLoaderCacher Action

Game/GamePong.cs

@@ -56,6 +56,8 @@ public class GamePong : Game
         monoGameContentLoaderCacher = new(gameManager);
         physicsEngine = new PhysicsEngine2DCacher(gameManager) { IterationPerStep = 3 };
 
+        monoGameContentLoaderCacher.OnCached += (_, cached) => cached.LoadContent(Content);
+
         gameManager.Initialize();
 
         base.Initialize();
@@ -156,11 +158,6 @@ public class GamePong : Game
             pongManager.BehaviourController.AddBehaviour<NetworkClient>().Connect("127.0.0.1", 8888);
             Window.Title = $"Pong - Client -> 127.0.0.1";
         }
-
-        foreach (var contentLoader in monoGameContentLoaderCacher)
-        {
-            contentLoader.LoadContent(Content);
-        }
     }
 
     protected override void Update(GameTime gameTime)