pytest and requirements.txt

[XOYZ69]

To verify integrity and better workflows there should be checks implemented which test if the code works in specific scenarios.

Therefore the workspace.py file might need to be spread out across multiple classes and files for better unit testing

• [x] Setup unittests
• [x] Setup github workflow
• [x] Rearrange workspace.py for unit testing
• [x] Check if any additional unit tests are needed