M5StickS3 Option to disable BtnPWR double-click power off

[gkoh]

Version: 0.2.13
Platform: M5StickS3

Related to #233 and the related fix #234, when using BtnPWR as user input it is very easy to trigger the power off capability with a double click.

I see that this can be disabled in the M5PM1 library here:
https://github.com/m5stack/M5PM1/blob/de2dab8e1a7e0ab8a00d44042251ad894605a05f/src/M5PM1.cpp#L3046

Would it be possible to expose a similar API in M5Unified?

[gkoh]

Would it be possible to expose a similar API in M5Unified?

On further thought I think if pmic_button is enabled this should be default behaviour.
Either you want to use the PMIC button as user button (and get click and double-click pass through) or you don't and the existing power control should remain.

However, would this completely disable any 'hard' power off ability (eg. very-long-press)?