[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/uzu42/keymaps/default/keymap.c

@@ -197,7 +197,7 @@ oled_rotation_t oled_init_user(oled_rotation_t rotation) {
   return rotation;
 }
 
-void oled_task_user(void) {
+bool oled_task_user(void) {
   if (is_keyboard_master()) {
     // If you want to change the display of OLED, you need to change here
     oled_write_ln(read_layer_state(), false);
@@ -209,6 +209,7 @@ void oled_task_user(void) {
   } else {
     oled_write(read_logo(), false);
   }
+    return false;
 }
 #endif // OLED_ENABLE