feat: Migrate project from PDM to uv

[sbekkerm]

Switched to uv for dependency management to leverage performance gains over PDM

[EmilienM]

I'm fine with it, but I'll leave the decision to @lpiwowar

[lpiwowar]

LGTM! 👍 just one small question and then it is good to merge IMO.

I personally prefer uv over pdm. I think we picked up pdm because that's the package manager that the lightspeed-core project seems to follow. So we just stuck with it.

Btw, pdm supports using uv as a backend (experimental feature). It makes the installation faster. Even though it is a bit strange (using one package manager as a backend for another package manager 🙃).

Also, it is going to be interesting how both pdm and uv will deal with the now relatively freshly accepted pylock.toml (PEP-751). From what I heard, uv will support it, but it will stick by default to its own format uv.lock, and pdm aims to make pylock.toml its default format.