improvement: pact publication console output

[ShahOdin]

Currently, if my project has two pacts: pactA and pactB and I were to update only pactA, running pact publish outpusts that publishing pactA and pactB was both successful.

It would be nice if it told the developer that only pactA was published as the mere "Success" is a bit misleading.

It's unclear if the pact-repo is just refusing to update a pact if the contents are the unchanged or if it accepts all such publications and only updates the publication date if changed. As such, I believe the improvement should be done either in scala-pact or the pact-repo server.