Setup deployment to GitHub package registry for ant-ivy artifacts

[j4ckofalltrades]

Includes changes in #31
Refs strongbox/strongbox#1927

[j4ckofalltrades]

@carlspring Requesting review

[carlspring]

@steve-todorov : Could you please have a look as well? If you're happy with it, let's merge it.

[steve-todorov]

LGTM! :)

[steve-todorov]

By the way, I was thinking - do you, perhaps, know how to limit the jobs to build only when a file from the respective example directory was changed? It would make more sense for those to be built only upon changes and will definitely make it easier for deploying since you wouldn't need to change all versions in all examples (referring to the forbidden version deletion and re-deployment issues which will occur if you re-deploy the same version)

[j4ckofalltrades]

do you, perhaps, know how to limit the jobs to build only when a file from the respective example directory was changed?

I'm afraid there is no out-of-box way to do this (at least from what I've read from the Github Actions docs).