Migrate setup.py to pyproject.toml for Python 3.12

As distutils, setup.py and setup.cfg are deprecated/removed in Python 3.12 migration to pyproject.toml should be done. Details can be found at:

• https://peps.python.org/pep-0632/
• https://snarky.ca/what-the-heck-is-pyproject-toml/