Create a cli tool to automatically upload new specification versions

[fdw]

As the developer of a nice but quickly changing web service, I want some way to automatically update the spec on my company's ApiCenter without having to do anything manually. This will make it effortless to keep ApiCenter up to date with the latest specs, which will in turn increase its usefulness.

There should be simple command line client that can upload a new version/specification of a service. It should be possible to integrate it with Maven and Gradle so that the spec can be uploaded with each build or deployment.

Of course, this means that there must not be any manual interaction. We need to find good defaults or another workaround.