Things to fix/update before repo move

[manykarim]

Readme

• [x] Update poetry installation instructions in Readme
• [x] Mention April as maintainer

Dependency Risk due to wildcards

• [ ] Add daily test runs or lock dependencies

• [x] Fix redundancy of setup.py and pyproject.toml (get rid of setup.py)

• [x] Is requirements.txt file needed? Is there another solution for Docker Image instead of that?

• [x] Update License to Schenker AG

• [ ] Update Testdata images and documents

• [x] Add COC

• [ ] Add Maintainer Contact details

• [ ] Purge some files