semantic release ci pipeline

best option for gradle seems to be axion plugin (last commit yesturday)

see

• https://github.com/allegro/axion-release-plugin
• https://axion-release-plugin.readthedocs.io/en/latest/configuration/ci_servers/
• https://buransky.com/programming/release-gradle-project-using-gitlab-ci-cd-pipeline/
• https://jozala.com/posts/2020-01-27-semantic-versioning-with-gradle/