Switch to `uv` for packaging?

[stdedos]

Feature request type

• Suppress false positives from existing pylint warnings
• Add new pytest-specific warning
• Other

Example action step: https://github.com/sphinx-doc/sphinx/blob/master/.github/workflows/builddoc.yml

    - name: Install uv
      run: curl -fsSL --proto '=https' --tlsv1.2 "https://astral.sh/uv/install.sh" | sh

(but pls no | sh, expand args)