Consider replacement of pyfilesystem2 (fs) which is not actively maintained and has EOL issues

[zimeon]

The ocfl-py codes currently throw a warning with python 3.11 and 3.12:

> ./ocfl-sidecar.py 
~/.python_venv/py311/lib/python3.11/site-packages/fs/__init__.py:4: UserWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html. The pkg_resources package is slated for removal as early as 2025-11-30. Refrain from using this package or pin to Setuptools<81.
  __import__("pkg_resources").declare_namespace(__name__)  # type: ignore

The last/current release of pythonfilesystem2 is 2.4.16 release in 2022 and the only commit to the repo since then was to change a link in the readme. No response from maintainers on PyFilesystem/pyfilesystem2#571 "Status of this project".

[zimeon]

Other packages note https://github.com/fsspec/filesystem_spec / https://filesystem-spec.readthedocs.io/en/latest/?badge=latest as a possible replacement and is more actively maintained.