transfer to Python 3.11

Move on to Python 3.11.13
Using pip-tools for dependency handling (requirements.in, requirements.txt)
Add diff check after pip-compile after setup in workflows python-app yml file

FastAPI_PydanticV2 v1.1.0

Vulnerabilities are fixed.
New dependent releases of libs are necessary. Therefore test code modifications for the app part necessary, because of new Pydantic V2 usage by FastAPI.

v1.0.0

initial release