Use pyproject.toml and poetry instead (RDT-355)

[hfudev]

• use ruff as the linter. enable more rules (https://github.com/charliermarsh/ruff)
• one pyproject.toml for all configurations (https://python-poetry.org/docs/pyproject/#packages)
• Use poetry instead. rewrite setup.py
• Enable docstring checks as well.

[kumekay]

Flit may be a better option https://github.com/pypa/flit ?

[hfudev]

This should be partially done by #213

Create #218 for a follow-up task regarding the docstring check.