forgot to push for a while, got drag-and-drop mostly working

InputSingleton.cs

@@ -0,0 +1,23 @@
+using Godot;
+
+public class InputSingleton
+{
+    private static InputSingleton _SingletonCache;
+    public static InputSingleton Instance
+    {
+        get
+        {
+            _SingletonCache ??= new();
+            return _SingletonCache;
+        }
+    }
+    private InputSingleton()
+    {
+
+    }
+    public Node ClickedOn { get; set; }
+    private void HandleMouseRelease()
+    {
+        
+    }
+}