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.

.vscode/settings.json

@@ -56,5 +56,5 @@
         "temp/": true,
         "Temp/": true
     },
-    "dotnet.defaultSolution": "Gnome-s-Bounty.sln"
+    "dotnet.defaultSolution": "Gnome-s-Bounty.slnx"
 }