Set gradle properties

While testing https://github.com/avelino/jbundle/pull/43, I found out that we use gradle properties to pass the version and version info string to gradle:

-PprojVersion="${{ steps.gitversion.outputs.AssemblySemVer }}" -PprojVersionInfo="${{ steps.gitversion.outputs.InformationalVersion }}"

(OK, also `-PeaJdkBuild="${{ needs.conditions.outputs.useEaJdk }}"`, but this is not important)

How to pass these gradle properties using `jbundle`?

Review jbundle's command-line entry point and how it currently invokes Gradle; the issue names no specific file or test. Define how the two version properties should be accepted and forwarded, then verify the behavior while reproducing the Gradle invocation described in the issue.

Written by the indexing model from the issue text.