[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/business_card/alpha/keymaps/default/keymap.c

@@ -39,5 +39,8 @@ static void render_logo(void) {
 
     oled_write_P(qmk_logo, false);
 }
-void oled_task_user(void) { render_logo(); }
+bool oled_task_user(void) {
+    render_logo();
+    return false;
+}
 #endif

keyboards/business_card/beta/keymaps/default/keymap.c

@@ -38,5 +38,8 @@ static void render_logo(void) {
 
     oled_write_P(qmk_logo, false);
 }
-void oled_task_user(void) { render_logo(); }
+bool oled_task_user(void) {
+    render_logo();
+    return false;
+}
 #endif