[Keymap] Drashna Keymap updates for 0.21.0 (#21073)

users/drashna/eeconfig_users.h

@@ -0,0 +1,12 @@
+// Copyright 2023 Christopher Courtney, aka Drashna Jael're  (@drashna) <drashna@live.com>
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <stdint.h>
+
+void eeconfig_read_user_config(uint32_t *data);
+void eeconfig_update_user_config(const uint32_t *data);
+
+void eeconfig_read_user_data(void *data);
+void eeconfig_update_user_data(const void *data);