[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/anavi/macropad8/keymaps/zoom/keymap.c

@@ -57,7 +57,7 @@ oled_rotation_t oled_init_user(oled_rotation_t rotation) {
     return OLED_ROTATION_180;  // flips the display 180 degrees if offhand
 }
 
-void oled_task_user(void) {
+bool oled_task_user(void) {
   // Host Keyboard Layer Status
   oled_write_ln_P(PSTR("ANAVI Macro Pad 8"), false);
   oled_write_P(PSTR("Active layer: "), false);
@@ -92,5 +92,6 @@ void oled_task_user(void) {
   snprintf(rgbStatusLine2, sizeof(rgbStatusLine2), "h:%d s:%d v:%d", rgblight_get_hue(), rgblight_get_sat(), rgblight_get_val());
   oled_write_ln(rgbStatusLine2, false);
 #endif
+    return false;
 }
 #endif