feat(esp_netfi): add captive portal DHCPS option

RFC 8910 provides a DHCP option to notify clients of a captive portal
prior to using the network, and is generally considered more
standards-compliant than classical DNS redirects.

components/esp_netif/include/esp_netif_types.h

@@ -89,6 +89,7 @@ typedef enum{
     ESP_NETIF_IP_REQUEST_RETRY_TIME         = 52,   /**< Request IP address retry counter */
     ESP_NETIF_VENDOR_CLASS_IDENTIFIER       = 60,   /**< Vendor Class Identifier of a DHCP client */
     ESP_NETIF_VENDOR_SPECIFIC_INFO          = 43,   /**< Vendor Specific Information of a DHCP server */
+    ESP_NETIF_CAPTIVE_PORTAL_URI            = 114,  /**< Captive Portal Identification */
 } esp_netif_dhcp_option_id_t;
 
 /** IP event declarations */

tools/ci/check_public_headers_exceptions.txt

@@ -21,9 +21,7 @@ components/esp_rom/include/esp32s2/rom/rsa_pss.h
 
 # LWIP: sockets.h uses #include_next<>, which doesn't work correctly with the checker
 # memp_std.h is supposed to be included multiple times with different settings
-components/lwip/lwip/src/include/lwip/priv/memp_std.h
 components/lwip/include/lwip/sockets.h
-components/lwip/lwip/src/include/lwip/prot/nd6.h
 
 ## Header produced non-zero object:
 components/esp_phy/esp32/include/phy_init_data.h
@@ -67,13 +65,9 @@ components/json/cJSON/
 
 components/spiffs/include/spiffs_config.h
 
-components/unity/unity/src/unity_internals.h
-components/unity/unity/extras/
 components/unity/include/unity_config.h
 components/unity/include/unity_test_runner.h
 
-components/cmock/CMock/src/cmock.h
-components/cmock/CMock/src/cmock_internals.h
 
 
 components/openthread/openthread/