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/map/FloorNode.cs

@@ -0,0 +1,6 @@
+using Godot;
+
+namespace Zennysoft.Game.Ma;
+public abstract partial class FloorNode : Node
+{
+}