Use UV

[nojaf]

Fixes #63

[nojaf]

@jgiannuzzi I’m a bit unsure if I’m on the right track with everything. Could you please review all the changes made so far? Thank you!

[nojaf]

@jgiannuzzi any thoughts on

?

[nojaf]

Great! Everything is functioning now!

Here's a summary of the changes:

• We are installing Python (and its packages) using uv.
  • uv reads the pyproject.toml and creates a lock file for the packages.
• In mage configure, we download the JS build files from PyPI instead of installing a stable MLflow version first and then a local version. The main motivation is that our current setup alters the lock file after installing MLflow locally instead of from PyPI. This makes sense, and we need to address this dependency issue during the wheel creation. It's fine to rely on the local package for development.
• The CC environment variable configuration (using Zig) to build the Go binary is now handled on the Python side.

Everyone, please try this out and let me know if it works for you! @jgiannuzzi, please review!