[Device] Sleep vs wake

[beefchimi]

If Earwurm audio is playing while your device goes to sleep, I believe what happens is the Audio Context is suspended. I am not sure if there is any API for reacting to a sleep or wake event from a device... but if so, we might want to make accomodations for that.

At the very least, we need to update the app/website to .pause() all audio when a device goes to sleep. An easy way to do this is probably to have a Stack listen to the context.state and call pause when the state switches to suspended.