Switch to hatch as a build backend, environment manager and publishing tool

[AnesBenmerzoug]

We should consider switching to hatch to simplify our setup and reduce the number of tools we use:

• setuptools
• twine
• tox

See here for a comparison to other tools and reasons for using hatch.

[mdbenito]

There's this wonderful principle which I really love... "if it works, don't fix it" 😄

I mean, I'm sure hatch is nice and all, but I'm also 100% sure it will have bugs, not support something basic or break in some unexpected way, just because it hasn't been tested by thousands of people for a decade, like setuptools and tox have. Don't get me wrong, I don't love our setup, but just changing to ruff I stumbled upon at least one bug that made me reconsider my life choices for a few minutes ...