Cross build to scala 3.0.1

[custommonkey]

Pull Request Checklist

• [ ] I agree to licence my contributions under the MIT licence
• [ ] I have added copyright headers to new files
• [ ] I have added tests for any changed functionality

Fixes

Fixes #429

Purpose

Support for scala 3

Background Context

Why did you take this approach?

References

Are there any relevant issues / PRs / mailing lists discussions?

[barkhorn]

appreciate the help with this, i've approved the workflows so hopefully they will now run on push to this PR

[barkhorn]

note that the .github/workflows/scala.yml file needs a section for scala 3 as well so it runs a build job for that version

[mkurz]

Any news here?

[barkhorn]

inactive for over a year, closing this PR