keep awake for phone and PC while soldering

[River-Mochi]

Is your feature request related to a problem? Please describe.
Keep awake feature

we may have this same problem with PineSAM as the ble webpage. see issue ticket, the Phone or PC will go to sleep even while still soldering and having BLE messages sent from Pinecil.

OP of ticket also posted a link to one solution.
joric/pinecil#6

[River-Mochi]

Some options that require no changes on PineSAM but would be user activated on their phone.

1. How to keep the iPhone on longer:
   From Apple

2. How to keep the Android phone on longer:
   either set it for 30min. in settings or use an app like Screen Alive.
   https://www.lifewire.com/keep-screen-active-on-android-5193014

3. Possible code to from PineSAM to play fake looped video or audio to keep screen on.
   https://stackoverflow.com/questions/59471449/how-to-prevent-screen-sleep-using-javascript/68301513#68301513