Setup shadow jar release deployment

[johanneshiry]

In contrast to your other projects, simona is a "standalone" application which cannot be run effortless as "light" jar. Therefore we need to find a way to not only release simona @ maven central, but also to release fat/shadow jars here on github. Currently, the CI/CD pipeline does not support such a feature. Therefore such a setup, maybe even in conjuction with a docker deployment to ship the simona jar inside a docker container, is required.

This task includes a proper version management of shadow jars of main and dev branches - which means normal or snapshot shadow jar version naming and must also enable the currently ignored DeploySpec.scala

Tasks

• fix and enable DeploySpec.scala