Add map loading logic and spawn rate control

Zennysoft.Game.Ma/src/ui/pause_menu/PauseDebugMenu.cs

@@ -23,6 +23,8 @@ public partial class PauseDebugMenu : Control, IDebugMenu
 
   [Node] public OptionButton SpawnEnemyDropDown { get; set; } = default!;
 
+  [Node] public Button LoadNextFloorButton { get; set; } = default!;
+
   private readonly string _floorFilePath = @"res://src/map/dungeon/floors/";
   private readonly string _enemyFilePath = @"res://src/enemy/enemy_types";
 
@@ -33,6 +35,8 @@ public partial class PauseDebugMenu : Control, IDebugMenu
 
   public override void _Ready()
   {
+    LoadNextFloorButton.Pressed += LoadNextFloorButton_Pressed;
+
     _itemDatabase = new ItemDatabase();
     _spawnableItems = _itemDatabase.Items;