[OPENJDK-2916] Reintroduce Pathfinder module

[Josh-Matsuoka]

This PR combines https://github.com/jboss-container-images/openjdk/pull/401 and https://github.com/jboss-container-images/openjdk/pull/455 and reintroduces the pathfinder module, targeting the ubi9 branch since we were unable to isolate the commits and cherry pick it over, a new PR was the cleanest way forward.

[jhuttana]

LGTM
I have verified the build for JDK 21 and I can see the jlink related script placed under expected path

$ docker run --rm -ti ubi9/openjdk-21:latest bash -c "ls -l /opt/jboss/container/java/jlink"
total 16
-rwxrwxr--. 1 default root  313 Apr 15 05:44 generatejdkdeps.sh
-rwxrwxr--. 1 default root 1082 Apr 15 05:44 mkdeps.sh
-rwxrwxr--. 1 default root  322 Apr 15 05:44 mkjreimage.sh
-rwxrwxr--. 1 default root  612 Apr 15 05:44 mkstrippeddeps.sh

[jmtd]

A few changes to make please, the main ones being remove the jlink module and references to it (we want to save that for the final PR that merges the jlink-dev branch in) and update the pathfinder logic to reflect the current logic in the ubi9 branch, which has moved on a bit from what it was when you originally created pathfinder.

[jmtd]

Thanks for iterating fast on this Josh. A couple more issues to resolve.

[jmtd]

PLease remove these remaining jlink module files:
modules/jlink/artifacts/opt/jboss/container/java/jlink/generatejdkdeps.sh
modules/jlink/artifacts/opt/jboss/container/java/jlink/mkdeps.sh
modules/jlink/artifacts/opt/jboss/container/java/jlink/mkjreimage.sh
modules/jlink/artifacts/opt/jboss/container/java/jlink/mkstrippeddeps.sh
modules/jlink/configure.sh
modules/jlink/module.yaml

[jmtd]

We should revisit the approach to this. Merging this in isolation from jlink-dev carries no advantages to the images but introduces the risk of a bug (however small).