Switch to pyproject.toml

[fsschneider]

This PR replaces the current setup.cfg and setup.py with (hopefully) equivalent pyproject.toml.
As described in #803 this is the PEP standard for package setup.
It probably doesn't fully resolve said issue as it also included more proposed changes du the dataset setup.

Note: We plan to move to ruff (replacing isort, pylint and yapf) as well as renaming the package to algoperf. Therefore, the pyproject.toml will change substantially with follow-up PRs.

@IFFranciscoME, I currently can't add you as a reviewer, but I am happy to hear your feedback as well.

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[IFFranciscoME]

@fsschneider Thanks for the tag and the acknowledgement of the 2 cents of work I've previously added to this engineering topic.

From a quick look, here are some notes

1. 100% agree in going for pyproject.toml, which I think is a good starter for a folder restructure as well.

2. Great to see the [project.optional-dependencies]

3. Perhaps "compiled examples" could be a good thing, i.e. to have an already compiled version of the package, for a "standard" system architecture-config.

I will try to make more free space for this, have had a lot of focus on some PhD work in the past 2 months, but hey, time in one's agenda is not to be founded but has to be created.