[Core] Change OLED task function to be boolean (#14864)

* [Core] Add kb level callbacks to OLED driver

* Update keyboards and keymaps

* Update docs

* Update userspace configs

* Add fix for my keymap ...

* update lefty

keyboards/crkbd/keymaps/mcrown/oled.c

@@ -308,7 +308,7 @@ static void render_logo(void){
  *  @param void.
  *  @return void.
  */
-void oled_task_user(void){
+bool oled_task_user(void){
     if (timer_elapsed32(standby_oled_timer) > 15000){
         oled_off();
     }else{
@@ -321,6 +321,7 @@ void oled_task_user(void){
             oled_scroll_left();
         }
     }
+    return false;
 }
 
 /** @brief process the current key and add it to the keylog string.