reworked Mark function to handle Clear function, fixed Goal class to adjusted address format, added shufflecellsfunction

Gameplay/Phone.cs

@@ -25,6 +25,7 @@ public partial class Phone : Sprite2D
         _phoneButtons[1]._contact = new Rotate90();
         _phoneButtons[2]._contact = new Swap1And6();
         _phoneButtons[3]._contact = new Shift1ColumnRight();
+        _phoneButtons[4]._contact = new ShuffleCells();
     }
 
     public override void _Process(double DELTA_)