[MSHARED-1351] Fix console message when origin is baseDir

[abelsromero]

Following this checklist to help us incorporate your
contribution quickly and easily:

• Make sure there is a JIRA issue filed
  for the change (usually before you start working on it). Trivial changes like typos do not
  require a JIRA issue. Your pull request should address just this issue, without
  pulling in other changes.
  👉 https://issues.apache.org/jira/browse/MSHARED-1351?jql=component%20%3D%20maven-filtering%20
• Each commit in the pull request should have a meaningful subject line and body.
  🤞
• Format the pull request title like [MSHARED-XXX] - Fixes bug in ApproximateQuantiles,
  where you replace MSHARED-XXX with the appropriate JIRA issue. Best practice
  is to use the JIRA issue title in the pull request title and in the first line of the
  commit message.
  👉 [MSHARED-1351] - Fix console message when origin is baseDir
• Write a pull request description that is detailed enough to understand what the pull request does, how, and why.

Checks when the path for the message is empty, then replaces that empty with "base dir" to avoid an invalid message.
I considered directly comparing paths

String origin;
if (basedir.equals(resourceDirectory)) {
    origin = "base directory";
} else {
    origin = basedir.relativize( resourceDirectory.getAbsoluteFile().toPath()) .toString();
}

It's more expressive, but that adds extra path processing that are not necessary if we simply check the relativized result.

PS: run

• Run mvn clean verify -Prun-its to make sure basic checks pass. A more thorough check will
  be performed on your pull request automatically.
  🆗 The profile does not exist btw, simply run mvn clean verify and mvn spotless:apply to fix formatting.

If your pull request is about ~20 lines of code you don't need to sign an
Individual Contributor License Agreement if you are unsure
please ask on the developers list.

To make clear that you license your contribution under
the Apache License Version 2.0, January 2004
you have to acknowledge this by using the following check-box.

• I hereby declare this contribution to be licensed under the Apache License Version 2.0, January 2004

• In any other case, please file an Apache Individual Contributor License Agreement.

[abelsromero]

Sent signed the CLA to the required address.

[abelsromero]

I see Windows failures for path format, I'll see to it later.

[abelsromero]

Run a customized pipeline on a fork and now Windows passes https://github.com/abelsromero/maven-filtering/actions/runs/7590061551

[abelsromero]

Anything else I should be checking? I don't any have anything identified.

[abelsromero]

Fixed the formatting, is there a way to run the pipeline without manual intervention?

[abelsromero]

Hi, all seems green in CI, except for 1 job that was mysteriously canceled. 🤷 Is there anything else that needs my attention in the PR? Thanks

[slachiewicz]

recently I've fixed similar code here codehaus-plexus/plexus-compiler#364

[abelsromero]

recently I've fixed similar code here codehaus-plexus/plexus-compiler#364

Not sure is the same thing. I don't have context on the other project, but the issue is that relativize will return an empty string in some cases, not an exception. Seems to me that the issue could still happen in plexus-compiler .