Add functionality to input an NTRIP server

[JoeHershman]

What would be really nice to better support applications using external GPS units would be an ability to input information about an NTRIP server so that corrections could be done within an application instead of requiring a separate application be running to do the corrections 

Thanks

[dotMorten_esri]

FYI the NMEA sample shows how you could accomplish this here: https://github.com/Esri/arcgis-runtime-demos-dotnet/blob/main/src/ExternalNmeaGPS/ExternalNmeaGPS.De...

[JoeHershman]

Thanks I'll take a look