[MBUILDCACHE-74] Clean local cache for any artifact

[mweirauch]

This MR cleans up any cached local build, no matter if the module/project in question has a package phase.

I noticed stale cache entries for our parent POM in the local build cache, which were not cleaned up.

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[mweirauch]

Oops, I didn't pay attention and force pushed a local change to the root pom.xml which helps vscode to actually recognize the generated sources folder for the mdo generated models. This now landed on master. I am very sorry for this mistake!

Please let me know if you want to keep it. It shouldn't hurt the build, but it's still IDE specific. (vscode uses Eclipse' m2e backend which needs some help with the classpath extension; dunno specifically if this change also helps Eclipse users as well)

[olamy]

@mweirauch no worries. My bad I didn’t check the PR correctly with last commit.
Please just create a PR to revert this.

[olamy]

@mweirauch done with #114