Implement XAP 'secure' core requirements (#16843)

Co-authored-by: Drashna Jaelre <[email protected]>
Co-authored-by: Stefan Kerkmann <[email protected]>

quantum/keyboard.c

@@ -562,6 +562,10 @@ void quantum_task(void) {
 #ifdef AUTO_SHIFT_ENABLE
     autoshift_matrix_scan();
 #endif
+
+#ifdef SECURE_ENABLE
+    secure_task();
+#endif
 }
 
 /** \brief Keyboard task: Do keyboard routine jobs