[tcp_transport] - Adds Socks4 proxy transport

- Basic implementation of Socks4 protocol.
- Introduce basic host testing.

components/tcp_transport/host_test/main/catch_main.cpp

@@ -0,0 +1,7 @@
+/*
+ * SPDX-FileCopyrightText: 2023 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#define CATCH_CONFIG_MAIN
+#include "catch/catch.hpp"