which is closer to the codecommons case

Replace pyfuse3_asyncio by pyfuse3.asyncio module introduced in pyfuse3 3.4.0

Also remove direct dependency on requests, should not be an issue any
more.

Related to swh/meta#5075.

and exclude api_data.py file from codespell in pre-commit; it's full of
stuff codespell fail to check.

`docs/images/arch-container.pdf` and `docs/images/arch-context.pdf` now
get included in `sdist` tarballs.

It now needs types-click which is indeed a dependency of
swh.core[testing].

That function from swh.core.config was removed in swh-core@2663c0a4.

GitLab will display the content of the README file when browsing the
repository. But in case the file is a symlink, it will display the
path pointed by the symlink. There is a 6 year old issue about this:
https://gitlab.com/gitlab-org/gitlab/-/issues/15093

We can workaround the issue by having the content at the root of the
repository and a symlink to this file in the `docs/` directory.

Tested in swh-py-template!27

Related to swh/meta#4960

Related to swh/meta#4959

This fixes python 3.7 support due to poetry, a dependency of isort, that
removed support for that Python version in a recent release.

In order to remove warnings about /apidoc/*.rst files being included
multiple times in toc when building full swh documentation, prefer to
include module indices only when building standalone package documentation.

Also include them the proper sphinx way.

Related to T4496

- pre-commit from 4.1.0 to 4.3.0,
- codespell from 2.2.1 to 2.2.2,
- black from 22.3.0 to 22.10.0 and
- flake8 from 4.0.1 to 5.0.4. Also freeze flake8 dependencies.

Also change flake8's repo config to github (the gitlab mirror
being outdated).

That hook can be frustrating as it can discard a long commit message
if it finds a typo in it so better removing it.