stub out secure as its own feature

quantum/secure.h

@@ -0,0 +1,27 @@
+// Copyright 2022 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <stdint.h>
+#include <stdbool.h>
+
+typedef enum {
+    SECURE_LOCKED,
+    SECURE_PENDING,
+    SECURE_UNLOCKED,
+} secure_status_t;
+
+secure_status_t secure_get_status(void);
+
+bool secure_is_unlocking(void);
+
+void secure_lock(void);
+
+void secure_unlock(void);
+
+void secure_request_unlock(void);
+
+void secure_keypress_event(uint8_t row, uint8_t col);
+
+void secure_task(void);