…moves README updater check from CI test script to pre-commit.

…4-nx_cugraph_readme_update

… version.

…dds NX>=3.2 to pre-commit python environment for nx-cugraph hooks, adds markdown as a type for nx-cugraph README updater, stubs out nx-cugraph runtime deps to allow import without installing them for nx-cugraph pre-commit hooks.

…b.com/rlratzel/cugraph into branch-24.04-nx_cugraph_readme_update

…dds function to produce a string repr with a quoting preference compatible with black, re-generates the _nx_cugraph/__init__.py modified with the wrong quoting preference from the prior commit.

…sted by ruff.

…4-nx_cugraph_readme_update

…4-nx_cugraph_readme_update