[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/soundmonster/keymap.c

@@ -300,7 +300,7 @@ void suspend_power_down_user() {
     oled_off();
 }
 
-void oled_task_user(void) {
+bool oled_task_user(void) {
     if (timer_elapsed32(oled_timer) > 30000) {
         oled_off();
         return;
@@ -314,6 +314,7 @@ void oled_task_user(void) {
     } else {
         render_status_secondary();
     }
+    return false;
 }
 
 #endif