esp_http_client: Added event for HTTP redirect

- Allows users to manually intercept and process the HTTP redirection
 when disable_auto_redirect (from the esp_http_client handle) is set to true

Closes https://github.com/espressif/esp-idf/issues/8029

components/esp_eth/test/test_emac.c

@@ -461,6 +461,9 @@ esp_err_t http_event_handle(esp_http_client_event_t *evt)
     case HTTP_EVENT_DISCONNECTED:
         ESP_LOGI(TAG, "HTTP_EVENT_DISCONNECTED");
         break;
+    case HTTP_EVENT_REDIRECT:
+        ESP_LOGI(TAG, "HTTP_EVENT_REDIRECT");
+        break;
     }
     return ESP_OK;
 }