Add sandbox mode to gesture tutorial settings.

Test: manual

Added a Sandbox mode tutorial fragment and controller. This fragment allows the user to try all the gesture commands and receive feedback, whether the gesture was successful or not.

Preview: https://drive.google.com/file/d/1Qmn71ZHMOrv2XjUngb6S4W5jOaBIvF1_/view?usp=sharing

Change-Id: I7d28ce25daa38fa6d05b18d43d02b77c1fc8a264