Find way to implement integration tests

[mathze]

The current integration test 'draft' approach does not work.
To be able to create integration tests we need a way to load a library and execute it with robot framework.

Task is to evaluate ways we can make integration tests work.
'Worst-case' scenario would be to create virtual projects in resources using gradle + rf-plugin -> copy this to a temp-folder -> compile jar -> calling the 'gradlew robotRun' + passing '-test ' to it.