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/EnvironmentObjects/KeyChest.cs

@@ -0,0 +1,37 @@
+using UnityEngine;
+
+public class KeyChest : MonoBehaviour
+{
+    private bool _isOpened = false;
+
+    private void OnTriggerEnter2D(Collider2D collider)
+    {
+        if (_isOpened)
+            return;
+
+        var playerState = collider.GetComponent<PlayerState>();
+        if (playerState != null)
+        {
+            _isOpened = true;
+
+            // Update player state
+            playerState.SetKey();
+
+            // Notify GameManager of key collection
+            if (GameManager.Instance != null)
+            {
+                GameManager.Instance.SetKeyState(true);
+            }
+
+            // Notify LevelManager of key collection
+            if (LevelManager.Instance != null)
+            {
+                LevelManager.Instance.NotifyKeyCollected();
+            }
+
+            // Destroy the chest
+            Destroy(gameObject);
+        }
+    }
+}
+