[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/amigopunk/keymaps/default/keymap.c

@@ -85,8 +85,9 @@ static void render_amigopunk_logo(void) {
     };
     oled_write_raw_P(amigopunk_logo, sizeof(amigopunk_logo));
 }
-void oled_task_user(void) {
+bool oled_task_user(void) {
     render_amigopunk_logo();
     /* oled_write_P(PSTR("Amigo Punk\n"), false); */
+    return false;
 }
 #endif