py: replace distutils with setuptools

py: replace distutils with setuptools

Removes a deprecation warning when using distutils and python >=3.10.

Python distutils module is formally marked as deprecated since python
3.10 and will be removed from the standard library from Python 3.12.
(https://peps.python.org/pep-0632/)

From https://setuptools.pypa.io/en/latest/setuptools.html

"""
Packages built and distributed using setuptools look to the user like
ordinary Python packages based on the distutils.
"""

Signed-off-by: Jose M. Guisado Gomez <guigom@riseup.net>
Signed-off-by: Florian Westphal <fw@strlen.de>