ACR60 Refactor (#13575)

* modernize acr60.h

- use #pragma once include guard
- add license header
- use four-space indent
- use QMK three-character notation for layout macro arguments

* human-friendly format info.json

* remove `key_count` keys from info.json

* rename LAYOUT_2_shifts to LAYOUT_all

* move LAYOUT_all to top

* use QMK three-character notation in info.json

* refactor default keymap

- add license header
- remove third layer (does nothing)
- replace Shift-Escape keycode with KC_GESC
- use LAYOUT_all macro instead of LAYOUT

* modernize readme.md

- update header
- convert metadata section to list
- add flashing and bootloader jump instructions
- update Docs links

* use #pragma once include guard in config.h

* update LED Indicator API

* add license headers

0 files changed, 0 insertions, 0 deletions