Add bubble outside the app (when using in controller mode)

[bhajneet]

If you make a phone call and leave the phone app, a bubble will pop up that can be moved around or clicked on. If you have used facebook messenger it could be something similar.

These options could be

• Back to Shabad OS
• Previous Line
• Autoselect
• Next Line

Helpful for when someone is using their mobile device for other things like live streaming from the mobile device, sangat feedback for their live stream via whatsapp/messaging (volume too low, focus, etc.), controlling sound levels (as there are now electronic/app versions of controlling gurdwara volumes), or other effects (phillip hue lights, etc.).

[bhajneet]

Bonus points for making prev, autoselect, and next buttons also show the line it would go to