[WIP] feat: use uv as a pip alternative

[MoisesGSalas]

uv is a new package installer/resolver written in rust by the same people that wrote ruff.

This is a small test to assess the viability of using uv instead of pip. It presents it self as a drop in replacement for pip, and for the most part it is, I only had to apply a single change due to limitations in editable VCS packages.

Tests

Using --target=python-requirements:

uv

1. An initial build without cache (--no-cache): 5m08s, 97s on pip install base.txt
2. Second build without cache: 4m58s, 94s on pip install base.txt
3. Break cache with a manual instructions (RUN touch /tmp/a) before installing base.txt: 2.36s, 1s on base.txt

pip

1. An initial build without cache (--no-cache): 7m29s, 234s on pip install base.txt
2. Second build without cache: , 7m15s, 223s on pip install base.txt
3. Break cache with a manual instructions (RUN touch /tmp/a) before installing base.txt: 1m06s, 57s one base.txt.