[source-build-reference-packages] Use new Arcade SDK publishing infrastructure

[JohnTortugo]

This repository uses a very old form of the Arcade SDK publishing infrastructure. That infra is planned to be removed from the Arcade SDK by the end of the first half of January 2020. The repository build definition(s) need to be updated to use the new publishing infrastructure, otherwise its official builds will fail to publish. It’s a simple process, documentation about it is here. If you have any question or problem please reach out to @JohnTortugo, @riarenas, @mmitche or .NET Core Engineering

Once we remove the old infrastructure you might not be able to get an updated Arcade SDK (or Arcade updates at all) if you’re not using the new publishing infrastructure.

[adaggarwal]

#96 fixes this.