[Core] Refactor OLED to allow easy addition of other types (#13454)

* add docs

* core changes

* update keyboards to new OLED

* updated users to new OLED

* update layouts to new OLED

* fixup docs

* drashna's suggestion

* fix up docs

* new keyboards with oled

* core split changes

* remaining keyboard files

* Fix The Helix keyboards oled options

* reflect develop

Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: mtei <2170248+mtei@users.noreply.github.com>

keyboards/helix/rev3_4rows/oled_display.c

@@ -35,7 +35,7 @@ enum layer_names {
   _ADJUST
 };
 
-#ifdef OLED_DRIVER_ENABLE
+#ifdef OLED_ENABLE
 
 void render_status(void) {
 

keyboards/helix/rev3_4rows/rules.mk

@@ -3,7 +3,8 @@ RGBLIGHT_ENABLE = yes   # Enable keyboard RGB underglow
 SPLIT_KEYBOARD = yes
 RGB_MATRIX_ENABLE = no
 RGB_MATRIX_DRIVER = WS2812
-OLED_DRIVER_ENABLE = yes
+OLED_ENABLE = yes
+OLED_DRIVER = SSD1306
 ENCODER_ENABLE = yes
 DIP_SWITCH_ENABLE = no
 LTO_ENABLE = yes