[PDSM] Medical Testcases for benchmarking

[ytehran]

Please note, that this PR is still in work

What does this PR do?

• Creation of test cases split into medical fields and languages (German & English)
• Analyzing those results and classifying their failure groups

Notes

For the analysis: Adaption of benchmark_utils for the failure_groups and added new methods To test for synonyms, “nltk” is used, which must

1. be installed e.g. pip install nltk
2. Downloaded by commenting line 26 in our test.py

[ytehran]

@slobentanzer Wir haben jetzt einen Teil der SW Engineering umgesetzt und die Fragen anpasst. Wir wären ready um den großen Durchlauf zu machen