Add role-based user database administration

src/user_console.h

@@ -0,0 +1,8 @@
+/* SPDX-License-Identifier: GPL-3.0-only */
+/* Physical UART0 role-based user administration. */
+
+#pragma once
+
+#include "esp_err.h"
+
+esp_err_t user_console_register_commands(void);