[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

keyboards/orthodox/keymaps/drashna/config.h

@@ -53,10 +53,11 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #    endif
 #endif  // AUDIO_ENABLE
 
-#undef PRODUCT
 #ifdef KEYBOARD_orthodox_rev1
+#    undef PRODUCT
 #    define PRODUCT "Drashna Hacked Orthodox Rev .1"
 #elif KEYBOARD_orthodox_rev3
+#    undef PRODUCT
 #    define PRODUCT "Drashna Hacked Orthodox Rev .3"
 #endif
 

keyboards/orthodox/keymaps/drashna/keymap.c

@@ -68,13 +68,3 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
 
 };
 // clang-format on
-
-void matrix_init_keymap(void) {
-#ifndef CONVERT_TO_PROTON_C
-    setPinOutput(D5);
-    writePinHigh(D5);
-
-    setPinOutput(B0);
-    writePinHigh(B0);
-#endif
-}