move standalone projects into own directory

projects/_standalone/nat-godot-playground/scripts/PlaygroundEntries.hx

@@ -0,0 +1,27 @@
+package;
+
+class PlaygroundEntries extends Control {
+    
+    public var currentFocus:EntryPanel = null;
+    public var currentFocusZ = Mathf.NA_N;
+    var ui:GodotUI = null;
+
+    public override function _Ready() {
+        var rootNode:RootNode = cast(getParent().getParent().getParent());
+        ui = rootNode.ui;
+    }
+
+    public override function getDragData(position:Vector2) {
+        return currentFocus;
+    }
+
+    public override function canDropData(position:Vector2, data:Dynamic) {
+        return data != null;
+    }
+        
+    public override function dropData(position:Vector2, data:Dynamic):Void {
+        var data:EntryPanel = cast(data);
+        data.rectPosition = position;
+        ui.playgroundSystem().savePosition(data.e, position.x, position.y, data.z);
+    }
+}