Updates nx-cugraph README for latest h/w, CUDA, python, NX requirements, moves updater to pre-commit

[rlratzel]

• Updates nx-cugraph README for latest h/w, CUDA, python, NX requirements
• Moves the call to the nx-cugraph README check and auto-updater script from the python CI test script to a pre-commit hook alongside the other codegen calls/checks. The pre-commit checks are run by the dev at commit-time and by CI as part of the style check job. This check will only run for changes to files under the nx-cugraph subdir.
• Updates the update_readme.py script to optionally download the NX objects.inv file itself so calling make is not required as part of the pre-commit hook.
  • NOTE: This is less important though, since the pre-commit hook still calls bash in order to set the PYTHONPATH env var to use the local version of the update_readme.py script, which is what I was trying to avoid in the first place. This still has some advantages in making the update_readme.py script more usable if the user isn't aware of how to obtain a objects.inv file, but feedback is welcome. The hook could also be changed to just call make if that ends up being preferred, in which case we'd have to consider if we still want the updates to update_readme.py to download the objects.inv file itself or not.

Here's the check running as part of the style-check job for this PR:

[eriknw]

Thanks Rick. It's nice to move what we can into pre-commit.

Any appetite for updating linting in pre-commit to better match what we have in nx-cugraph?

Overall looks good, but I shared a few minor comments and nits.

[acostadon]

Looks great.

[rlratzel]

/merge