[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/lefty/lefty.c

@@ -17,7 +17,10 @@
 #include "lefty.h"
 
 #ifdef OLED_ENABLE
-__attribute__((weak)) void oled_task_user(void) {
+bool oled_task_kb(void) {
+    if (!oled_task_user()) {
+        return false;
+    }
     // Host Keyboard Layer Status
     oled_write_P(PSTR("Layer: "), false);