scaffolding: remove poetry and setup uv workspace

[ClementWalter]

Why

The project currently uses poetry as a python deps and packaging manager. uv is a new tool, much fast.

What

Replace all poetry related things by uv ones.

How

• migrate the pyproject.toml file to use uv instead
• remove the poetry.lock file
• update README.md
• delete compilation artifacts from the repo
• add polars-rs
• create a notebook folder and an ipynb with the content of https://gist.github.com/ClementWalter/5b75f2c8522beae3ae9a9f90d31edfcf
• update the notebook to actually use the VM over one of the cairo program