add button to signify pb in cozmofriends task

[AnaisPsnt]

Add a button (on the controller - "X" for example) that the participant can press when encountering a problem such as going up a wall a not being able to get back down on it's own.
The person supervising will then resolve the problem.
The person will be advised to not press any button until Cozmo is back on the ground facing normally the maze with a clear view.
When the problem is resolved, the person will press another button to drive again.

The duration of this event will be from the press of 'problem' ('X') button until the press of another button
@FrancoisPgm