Support multi-release jars in delombok

[Rawi01]

This PR fixes #3389

I also updated delombok to return 1 if there is an error and updated the action to run the test during the build.

[victorwss]

I had a problem in a project with some multi-release module JARs as dependencies. My project uses lombok and delombok goes nuts due to this bug, even if using the latest edge version. So, I manually applied your patch to Delombok.java into lombok's edge, recompiled lombok and added it to my project. Worked like a charm! For me, this should be included in next version!

[victorwss]

@Rawi01 Any reason why this was still not integrated? It is a great work.

[reneleonhardt]

It's sad when contributors fixing old bugs are not even being appreciated for their efforts with a review... 😞

[rzwitserloot]

@reneleonhardt You should like into how the XZ hack went down. It's entitled meanspirited whiners like you that hurt open source. You. You hurt open source. Cut it out.

Final notice, next complaint will get you banned from this project.