[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/yampad/yampad.c

@@ -1,4 +1,4 @@
-    
+
 /* Copyright 2019
  *
  * This program is free software: you can redistribute it and/or modify
@@ -16,13 +16,13 @@
  */
 #include "yampad.h"
 
-#if defined(OLED_DRIVER_ENABLE)
+#if defined(OLED_ENABLE)
 __attribute__((weak))
 oled_rotation_t oled_init_user(oled_rotation_t rotation) {
     return OLED_ROTATION_270;  // flips the display 270 degrees
 }
 
-__attribute__((weak)) 
+__attribute__((weak))
 void oled_task_user(void) {
   // Host Keyboard Layer Status
   oled_write_P(PSTR("Layer"), false);