Phoebe build system

[aprsa]

We are on the verge of replacing distutils with setuptools. Yet that is just the first step towards a more modern build system. I'm providing below some of the most insightful reads on the topic as of late 2023.

https://packaging.python.org/en/latest/guides/modernize-setup-py-project/#what-is-the-build-isolation-feature
https://www.pyopensci.org/python-package-guide/package-structure-code/python-package-build-tools.html
https://setuptools.pypa.io/en/latest/userguide/ext_modules.html
https://meson-python.readthedocs.io/en/latest/tutorials/introduction.html#tutorial-introduction
https://packaging.python.org/en/latest/tutorials/installing-packages/
https://carpentries-incubator.github.io/python_packaging/instructor/03-building-and-installing.html
https://setuptools.pypa.io/en/latest/userguide/ext_modules.html

It looks like pdm and poetry are the most suitable candidates, with pdm being slightly favored, using the meson backend for building c/c++ libraries.