[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/handwired/marauder/keymaps/orvia/keymap.c

@@ -156,7 +156,7 @@ static void render_anim(void) {
 }
 
 // Used to draw on to the oled screen
-void oled_task_user(void) {
+bool oled_task_user(void) {
     render_anim();  // renders pixelart
 
     oled_set_cursor(0, 0);                            // sets cursor to (row, column) using charactar spacing (4 rows, 21 full columns on a 128x32 screen, anything more will overflow back to the top)
@@ -194,5 +194,6 @@ void oled_task_user(void) {
     }
     oled_set_cursor(17, 3);
     oled_write_P(PSTR("NKRO"), keymap_config.nkro);
+    return false;
 }
 #endif