[WIP] ENH: add Pyarrow csv engine

[arw2019]

• closes ENH: allow engine='pyarrow' in read_csv #23697
• tests added / passed
• passes black pandas
• passes git diff upstream/master -u -- "*.py" | flake8 --diff
• whatsnew entry

Picking up #31817.

I'm putting this up to use CI for debugging. There are a bunch of comments in #31817 that I haven't addressed yet (working on them) - but I'll take feedback at any time

[github-actions]

This pull request is stale because it has been open for thirty days with no activity. Please update or respond to this comment if you're still interested in working on this.

[jreback]

@arw2019 i think the precursors were all merged, would be nice to get this in.

[arw2019]

ok - will rebase (sometime in the next few days - it's a little bit of work now) and ping when ready

[github-actions]

This pull request is stale because it has been open for thirty days with no activity. Please update or respond to this comment if you're still interested in working on this.

[lithomas1]

Just a heads up that I'm going to try to revive this PR sometime soon-ish.

[simonjayhawkins]

Just a heads up that I'm going to try to revive this PR sometime soon-ish.

OK. closing this one as stale.

[lithomas1]

Working on this rn, currently rebasing. Will open new PR.