Currently the sage library uses distutils. Switching to setuptools will give us the setup.py develop command, which bypasses the need to rebuild the sage library when modifying python files.

See also:
#29845 - PEP 517 buildapi for sage_setup

References:

https://stackoverflow.com/questions/3779915/why-does-python-setup-py-sdist-create-unwanted-project-egg-info-in-project-r

Depends on #29702
Depends on #29803

CC: @kini @jdemeyer @robertwb @kcrisman @mwhansen @jhpalmieri @embray @dimpase @kiwifb

Component: build

Branch/Commit: u/mkoeppe/make_sagelib_use_setuptools_instead_of_distutils @ 93bbbfe

Reviewer: Dima Pasechnik

Issue created by migration from https://trac.sagemath.org/ticket/13190