Use pyproject.toml for everything and update test resources problem

[DaJansenGit]

This entails some bigger changes than the name of the branch might suggest:

• solves problems with test resources in sciebo that make it hard to follow problems that occur when changes on the test resources are performed (changes in test resources in sciebo crash tests without pipeline trigger #721)
• supported python versions are now 3.10 and 3.11
• remove all remaining requirements.txt links and only use pyproject.toml
• also use pyproject.toml for all docker images, thus completly new structure in the docker images
• new pipeline structure for tests and building images.

closes #731
closes #721