Show STA IP in WLAN config

src/webserverrouter.h

@@ -161,6 +161,8 @@ void setupRoutes() {
     // IP address
     IPAddress ip = WiFi.softAPIP();
     doc["ip"] = ip.toString();
+    IPAddress ipSTA = WiFi.localIP();
+    doc["ipSTA"] = ipSTA.toString();
     doc["channel"] = WiFi.channel();
 
     // MAC address