Update GPIO macro usages in core (#23093)

Add RGB matrix & LED Matrix support for IS31FL3729 (#21944)

Co-authored-by: Xelus22 <preyas22@gmail.com>
Co-authored-by: dexter93 <d3xter93@gmail.com>

LED drivers: add support for shutdown pin (#23058)

* LED drivers: add support for shutdown pin

* Update candidate boards

AW20216S: combine EN pin defines (#23067)

is31fl3741: split PWM and scaling buffers (#23049)

LED drivers: update PWM register defines for `g_<driver>_leds` (#23052)

LED drivers: create structs to hold PWM/scaling buffers (#22955)

LED drivers: place I2C addresses into an array (#22975)

LED drivers: update I2C API usage (#22951)

LED drivers: remove `write_pwm_buffer()` from public API (#22884)

LED drivers: remove PWM register offsets (#22897)

LED drivers: switch to i2c_writeReg() (#22878)

LED drivers: change `write_pwm_buffer()` return type to `void` (#22869)

LED drivers: more formatting (#22865)

snled27351: change `write_register()` return type to `void` (#22825)

is31fl3733: change `write_register()` return type to `void` (#22824)

LED drivers: misc formatting and typos (#22857)

apa102: cleanups (#22826)

is31fl3733: fix driver sync backwards compatibility defines (#22851)

LED drivers: rename "simple" to "mono" (#22814)