feat(sockutls): Add initial support for socket helpers

components/sock_utils/include/getnameinfo.h

@@ -0,0 +1,40 @@
+/*
+ * SPDX-FileCopyrightText: 2024 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#pragma once
+
+#include "lwip/sockets.h"
+
+#ifdef CONFIG_IDF_TARGET_LINUX
+// namespace with esp_ on linux to avoid conflict of symbols
+#define getnameinfo esp_getnameinfo
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+* @brief Converts a socket address to a corresponding host and service name.
+*
+* @param[in]  addr    Pointer to the socket address structure.
+* @param[in]  addrlen Length of the socket address.
+* @param[out] host    Buffer to store the host name.
+* @param[in]  hostlen Length of the host buffer.
+* @param[out] serv    Buffer to store the service name.
+* @param[in]  servlen Length of the service buffer.
+* @param[in]  flags   Flags to modify the behavior of the function.
+*
+* @return
+*     - 0 on success.
+*     - Non-zero on failure, with `errno` set to indicate the error.
+*/
+int getnameinfo(const struct sockaddr *addr, socklen_t addrlen,
+                char *host, socklen_t hostlen,
+                char *serv, socklen_t servlen, int flags);
+
+#ifdef __cplusplus
+}
+#endif