Update esp_http_client example to build for linux target

examples/protocols/linux_stubs/esp_stubs/include/esp_netif.h

@@ -0,0 +1,11 @@
+/*
+ * SPDX-FileCopyrightText: 2022-2023 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Unlicense OR CC0-1.0
+ */
+#include <sys/ioctl.h>
+#include <net/if.h>
+#include <ifaddrs.h>
+#include "esp_err.h"
+
+esp_err_t esp_netif_init(void);