Modernise Building Process

[ericspod]

MONAI uses requirement files, a cfg file, and a setup.py file for module definition and building. Many actions use different building processes to setup the environment for testing and install MONAI rather than just using pip install monai[...].

To modernise things, MONAI should be updated with:

• Package information consolidated in the pyprojects.toml file. (Modernising Build Process #9010)
• Actions updated to use pip for installation only. (Modernising Build Process #9010)
• Requirements files removed in favour of different dependencies sections like in the cfg file, this should be accompanied with a script to extract dependencies from pyprojects.toml to recreate these if needed. (Modernising Build Process #9010)
• Installation instructions updated to match. (Modernising Build Process #9010)
• Verify these work for tutorials and bundles.

[aymuos15]

Can we also add https://docs.astral.sh/uv/ as the default guidelines here, to be coupled with pip?

[ericspod]

We should look into using uv, pipx, and other tools, at least testing with them as they are getting popular. pip is the primary platform so testing would be optional, breaking uv support wouldn't be a blocker.