Add Auto Shutdown Settings

[marcussacana]

It's not uncommon for me to pick up my headset and realize I left it in sleep mode. Today, after leaving it unused for two days, I found the battery completely drained, even though I had turned it off with a full charge. It most likely got stuck on an update screen or went into sleep mode.

I think after a few hours, the headset shouldn’t stay in sleep mode but should instead hibernate or turn off. It would be ideal if the user could set a specific time period for this behavior.