RFC Migrate away from numpy.distutils before CPython 3.12 (October 2023)

As observed on our nightly scipydev CI build, Python's distutils is now officially deprecated and we get "DeprecationWarning: The distutils.sysconfig module is deprecated, use sysconfig instead" when trying to build scikit-learn on Python 3.10.

This means that scikit-learn needs to find a replacement for numpy.distutils. Scipy is already working on switching to meson.

I think scikit-learn should probably do the same.