AP_HAL_ESP32: Add GPIO driver for ESP32

[sblaksono]

Add GPIO driver for ESP32

[davidbuzz]

Needs squash into a single commit, but the code changes look good

[tpwrules]

This looks reasonable, but please rebase on master and retest. We did just merge a big upgrade to ESP-IDF 5.3 which might break it.

[sblaksono]

Done merging, tested on my esp32 board. No issue...

[tpwrules]

Please rebase on master and squash to one commit, the project does not permit merge commits.

[sblaksono]

@tpwrules done

[peterbarker]

@tpwrules done

Well... what @tpwrules really meant was two commits - one per logical subsystem. Sorry, we're not making this stuff up, it's in here: https://ardupilot.org/dev/docs/submitting-patches-back-to-master.html#preparing-commits :-)

I've made that split for you and tweaked a commit message and marked this one as "merge on CI pass".

Thanks!

[sblaksono]

Thank you, newbie here :)

[tpwrules]

Tested and "sounds" good to me :)

Sorry I did not notice the additional subsystem change.