Upgrade and use ruff==0.4.8 and support numpy>=2.0.0

[domna]

Fixes #175

• pint 0.24 only supports python 3.10. But pint < 0.24 does not support numpy 2. So we do numpy<2.0.0;python<3.10 in pyproject.toml. Here is the thread for reference: pint 0.24 / numpy 2.0 / python 3.9 issues hgrecco/pint#1974

Changes

• Uses ruff == 0.4.8 for linting and formatting instead of black and pylint
• Ruff formats the code
• Upgrades and changes for numpy>2.0.0
• Removes support for python 3.7
• Renames testing extra to dev
• Adapts workflows to use uv
• Updates all requirements

[domna]

uv doesn't work with python 3.7. I just removed it. I think it's not officially supported anymore anyways, so I guess it's fine to request that people have at least python 3.8.

[MarJMue]

Looks good to me