Feature request: Keep screen awake

[duk3luk3]

On some platforms such as iPhone there is no way to set a global wake lock to stop the device from dimming / turning off / locking the screen while using the chasemapper web interface. This is a problem.

Reportedly nosleep.js works on iOS: https://github.com/richtr/NoSleep.js

There is also a standardized wakelock API, currently in experimental status but supported by a few platforms:

https://caniuse.com/?search=wakelock

https://developer.mozilla.org/en-US/docs/Web/API/WakeLock