Mouse/Touch Update

Version d5 changelog

• Added Mouse / Touch input support to move Snakes. Click/touch & drag to move Snakes.
• Swapped the position of Undo & Restart prompts in the UI.
• Undo move / Restart input prompts can now be interacted with Mouse. Even when using Keyboard or Gamepad to move.
• Added a Pause button when using Mouse / Touch.
• When using Mouse / Touch, the Undo Move prompt shows up instantly after your first move instead of when Stuck.