Improvements to save and loading

Improvements to Chinthe animation logic
Fix broken Godot Tool system and just use a more manual approach to setting map nodes
Remove ItemDatabase from individual room scenes

Zennysoft.Game.Ma/src/item_rescue/ItemRescue.cs

@@ -21,5 +21,7 @@ public partial class ItemRescue : Area3D
       droppedItem.RescueItem();
     if (item is ThrownItem thrownItem)
       thrownItem.RescueItem();
+
+    BodyEntered -= OnItemRescueEntered;
   }
 }