[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/dactyl_manuform/5x6_5/keymaps/333fred/keymap.c

@@ -115,7 +115,7 @@ void write_quote(const char* data, const uint8_t num_lines) {
     }
 }
 
-void oled_task_user(void) {
+bool oled_task_user(void) {
     if (is_keyboard_master()) {
         render_logo();
         oled_advance_page(/* clearPageRemainder */ true);
@@ -559,6 +559,7 @@ void oled_task_user(void) {
                 break;
         }
     }
+    return false;
 }
 
 bool encoder_update_user(uint8_t index, bool clockwise) {