config structure

src/GoDaddyDDNS/appsettings.json

@@ -5,5 +5,16 @@
       "Microsoft": "Warning",
       "Microsoft.Hosting.Lifetime": "Information"
     }
-  }
+  },
+  "PublicIPProviders": [
+    "https://api.ipify.org/",
+    "https://checkip.amazonaws.com/",
+    "https://ipinfo.io/ip",
+    "https://icanhazip.com/",
+    "https://www.trackip.net/ip"
+  ],
+  "Domain": "*********",
+  "Records": [ "@" ],
+  "Key": "*********",
+  "Secret": "*********"
 }