Refactor player and enemy scripts; remove unused classes and improve initialization

- Added base initialization call in PlayerController.
- Changed player reference in EnemyAI to be serialized for better inspector visibility.
- Ensured characters are initialized upon spawning in EnemySpawner.
- Removed obsolete EnemyAI and Chest scripts to streamline codebase.
- Added KeyChest script for key collection functionality.
- Introduced new meta files for better organization and tracking.
- Created launch configuration for Unity debugging.

Assets/Scripts/Enemies/EnemyAI.cs

@@ -24,7 +24,7 @@ public class EnemyAI : Character
     private float _stunTimer = 0f;
     private float _patrolDirection = 1f;
 
-    private static readonly Player _player = null;
+    [SerializeField] private Character _player = null;
 
     public EnemyState CurrentState => _currentState;
 
@@ -58,7 +58,7 @@ public class EnemyAI : Character
         }
 
         // Get player position if available
-        var player = Player.Instance;
+        var player = _player;
         if (player == null)
         {
             HandlePatrol();