build: replace `distutils` with `setuptools`

This commit makes the build of Python packages use `setuptools` instead
of the deprecated `distutils` in `setup.py` files. See
[PEP 632](https://peps.python.org/pep-0632/) for more information on the
deprecation of `distutils`.

Note that using `setuptools` instead of `distutils` removes the
following user warning messages when creating the `bdist` and `sdist` of
the consumer and producer projects:

```
/usr/lib/python3.8/distutils/dist.py:274: UserWarning: Unknown distribution option: 'setup_requires'
  warnings.warn(msg)
/usr/lib/python3.8/distutils/dist.py:274: UserWarning: Unknown distribution option: 'install_requires'
  warnings.warn(msg)
```

consumer/api/python/dist_linux/setup.py.in

-from distutils.core import setup
-from distutils.core import Extension
+from setuptools import setup, Extension
 import numpy
 import os
 

consumer/api/python/setup.py.in

-from distutils.core import setup
-from distutils.core import Extension
+from setuptools import setup, Extension
 
 from Cython.Build import cythonize
 

producer/api/python/dist_linux/setup.py.in

-from distutils.core import setup
-from distutils.core import Extension
+from setuptools import setup, Extension
 import numpy, os
 
 ext_modules = [

producer/api/python/setup.py.in

-from distutils.core import setup
-from distutils.core import Extension
-
+from setuptools import setup, Extension
 from Cython.Build import cythonize
 
 import numpy