added gamescreen UI and simple start menu

Assets/Darkmatter/Code/App/Installers/GameLifetimeScope.cs

@@ -22,6 +22,9 @@ namespace Darkmatter.App
 
         [SerializeField] private AudioService audioService;
 
+        [Header("UI Settings")]
+        [SerializeField] private GameScreenView gameScreenView;
+
 
         [Header("Factory parameters")]
         [SerializeField] private Transform playerTransform;
@@ -58,7 +61,7 @@ namespace Darkmatter.App
                       c.Resolve<IObjectResolver>()), // <-- inject resolver properly
                   Lifetime.Scoped);
 
-
+            builder.Register<GameScreenController>(Lifetime.Scoped).WithParameter(gameScreenView).As<IGameScreenController>();