Update App apk

[sevenseasofbri]

Requirements for the app apk:

• [x] Control motors with buttons
• [x] Establish BT connectivity
• [x] Control curve turning using speed control
• [x] [Not confirmed] Control LED strip if needed

[wamikamalik]

Suggested curve turn control: use the speed controller to map % to 4 or 8 values that will be used to control the speed of one side of the robot.

[sevenseasofbri]

closes with #24