[Keymap] Drashna updates for 0.19 (#19175)

* Fix up bastardkb boards since blackpill support is officially added.
  * Check for blackpill version, not elite c.
  * Add checks in chibiOS config since multiple ARM controllers supported.
  * Rework rules.mk for keymaps to better handle arm vs avr support
* Start moving away from `matrix_*_*` functions.
  * `housekeeping_task_*` instead of `matrix_scan_*`
  * `keyboard_(pre|post)_init_*` instead of `matrix_init_*` 
* Add ℂℴmⅈℂ unicode input method.
* Clean up unicode code to be more compact and flexible.
* Remove/move Pro Micro LED commands to userspace and better filter them
* Fixup OLED code
  * Use newer quantum keycode functions/preprocessors rather than manual bit manipulation
  * Make unicode mode render much more compact/simple.
* Make qmk secrets more self contained
* Remove custom implementation of split watchdog

new keyboard rb1 (#18164)

* rb1

* Update keymap.c

* Update keyboards/ryanbaekr/rb1/info.json

Co-authored-by: Ryan <fauxpark@gmail.com>

* Delete rb1.c

* Delete rb1.h

* Update keyboards/ryanbaekr/rb1/config.h

Co-authored-by: Ryan <fauxpark@gmail.com>

* Update keyboards/ryanbaekr/rb1/config.h

Co-authored-by: Ryan <fauxpark@gmail.com>

* Update keyboards/ryanbaekr/rb1/config.h

Co-authored-by: Ryan <fauxpark@gmail.com>

Co-authored-by: Ryan <fauxpark@gmail.com>

Add piantor (#18920)

* Add piantor

* Update keyboards/beekeeb/piantor/readme.md

Co-authored-by: Drashna Jaelre <drashna@live.com>

Co-authored-by: Drashna Jaelre <drashna@live.com>

Merge remote-tracking branch 'upstream/develop'

Fix API errors in handwired/tractyl_manuform/5x6_right/arduinomicro (#19166)

Change `RGB_MATRIX_STARTUP_*` defines to `RGB_MATRIX_DEFAULT_*` (#19079)

Joystick feature improvements (#19052)

Change `LED_MATRIX_STARTUP_*` defines to `LED_MATRIX_DEFAULT_*` (#19080)

Merge remote-tracking branch 'origin/master' into develop

Fix build failures for `bastardkb/tbk` and `jels/boaty` (#19152)

Merge remote-tracking branch 'origin/master' into develop

Fix annepro2/c18:iso_default (#19147)

jsonify some info.json (#19146)

Fixup aurora/corne on develop (#19144)

Merge remote-tracking branch 'origin/master' into develop

[Keymap] komidore64 planck rev6 (#19036)

Co-authored-by: Ryan <fauxpark@gmail.com>

[Keyboard] Add splitkb.com's Aurora Corne (#18880)

[Add function] add 'Split Space and ISO and delete RGUI for Promise 87 (#18929)

* add split space and ISO

* Update wkl.h

* update ISO

* update

* change KC_LGUI to KC_RGUI

* delete RGUI

* format

* update promise87 readme.md

* update promise87 wkl readme.md

* Update readme.md

* Update readme.md

* change KC_SLCK to KC_SCRL

* wuque/promise87/ansi: standardize Layout Macro names

- rename `LAYOUT_tkl_f13_ansi` to `LAYOUT_tkl_f13_ansi_tsangan`
- convert `LAYOUT_tkl_f13_ansi_iso` to `LAYOUT_tkl_f13_iso_tsangan` (adds position `K41`)
- rename `LAYOUT_tkl_f13_ansi_split_space` to `LAYOUT_tkl_f13_ansi_tsangan_split_space`
- rename `LAYOUT_tkl_f13_ansi_split_bs` to `LAYOUT_tkl_f13_ansi_tsangan_split_bs`
- rename `LAYOUT_tkl_f13_ansi_split_lshift` to `LAYOUT_tkl_f13_ansi_tsangan_split_lshift`
- rename `LAYOUT_tkl_f13_ansi_split_rshift` to `LAYOUT_tkl_f13_ansi_tsangan_split_rshift`
- rename `LAYOUT_tkl_f13_ansi_split_bs_rshift` to `LAYOUT_tkl_f13_ansi_tsangan_split_bs_rshift`

* wuque/promise87/wkl: refactor LAYOUT_tkl_f13_ansi_wkl_iso

Refactors `LAYOUT_tkl_f13_ansi_wkl_iso` into `LAYOUT_tkl_f13_iso_wkl` by adding position `K41` (Non-US Backslash) to the layout macro.

Co-authored-by: James Young <18669334+noroadsleft@users.noreply.github.com>

initial (#19137)

Update use of legacy keycodes (#19120)