Add option to use ruff instead of pylint

[pppmlt]

• ruff (https://github.com/astral-sh/ruff) is a nice and fast alternative to pylint
• add option to use ruff instead of pylint
• if ruff is chosen
  • remove .pylintrc
  • remove isort
  • adapt pyproject.toml

    [tool.ruff]
    # Never enforce `E501` (line length violations), as this is handled by black
    ignore = ["E501"]
    line-length = 100 # sync with black

• ruff can be used as "normal" hook and does not need to be able to import (so not as mandatory local hook like pylint)