Enhancement add classifier field to the MavenArtifact struct

[claudio4j]

The classifier is relevant, since jolokia 2.0.0 jvm agent is resolved by using a GAV classifier.
The change in camel-k-catalog is in this PR #1161

Release Note

feature: add classifier field to the maven artifact structure

[squakez]

There are a few things to review. I'd avoid to change the jolokia until the new parameters are on the catalog (the final agent text will have more changes I think). However, the usage of classifier is something we should already provide.

Looks good now

[squakez]

the :: looks suspicious. Are they really expected that way?

[github-actions]

✔️ Unit test coverage report - coverage increased from 35.6% to 35.7% (+0.1%)

[squakez]

Okey, if I understand correctly, the regex still would expect in parameters such as type and classifier, and, is that case provides empty value ending up with a format like org.mygroup:my-artifact:::foo. Considering this is only used internally, I think it's good to go.

[claudio4j]

Originally the classifier was before the version but that was wrong, as the classifier must be after version.
Also, I reworked the ParseGAV function to accommodate the full GAV + classifier and it was a headache to change the regex, then I found it easier to use the split function and pick the elements from the array.
Thanks for reviewing.