[FEATURE] Add "Deep sleep" with BTN1 enable/disable in Settings

[ErikS-web]

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

No

Describe the solution you'd like

When the touchpad marked as BTN1 on the ESPRi-PCB the program flashed twice the Green LED and than goes to Deep sleep.

This can be seen in console-logging.

I (12777) HW/BUTTON: Button 1 was pressed.
I (12877) SYSTEM: Deep sleep

Until BTN1 is pressed again (or reset from device).

rst:0x5 (DEEPSLEEP_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)

Describe alternatives you've considered

Not everyone will prefer this and may even touch it unconsciously.
I suggest making this BTN-1 Deep sleep function selectable in Setting

Additional context

[kamilsss655]

Yup, ideally there should be actions system, where BTN 1 has user assignable action/function.

Perhaps good first issue for new developers.