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/Controllers/PlayerController.cs

@@ -25,6 +25,7 @@ public class PlayerController : Character
         _hammerThrower = GetComponent<HammerThrower>();
 
         _inputManager.OnFire += OnFireButtonPressed;
+        base.Init();
     }
 
     private void OnEnable()