GitLab

Used following commands:
- mvn -Dmaven.test.skip=true package
- java -jar VadereSimulator/target/vadere-console.jar migrate -r VadereModelTests/
- git clean -n
- git clean -f (to delete <scenario_file>.scenario.legacy which is created by migration assistant)

Signed-off-by: hm-schuhba1 <stefan.schuhbaeck@hm.edu>

In "01_unsupported_event_exception_for_unsupported_models.scenario", changed from Reynolds' to OSM model to avoid failing tests in CI pipeline.

Grouped all event tests in directory "VadereModelTests/TestEvents" and lowercased all test files (to be consistent with existing model tests).