web_server replaced by json

It takes less memory and provides the libraries needed for this project.

nspanel_esphome_advanced.yaml

@@ -90,3 +90,11 @@ text_sensor:
     bssid:
       name: ${device_name} BSSID
       disabled_by_default: true
+
+##### WEB SERVER SETUP #####
+web_server:
+  id: web_server_std
+  port: 80
+  auth:
+    username: admin
+    password: ${wifi_password}