Preview build/deploy option for the documentation in github actions. It seems like that one may have been lost in the repo switch process.

[AnnaKwa]

Also, we used to have a preview build/deploy option for the documentation in github actions. It seems like that one may have been lost in the repo switch process.

Originally posted by @frodre in #743 (comment)

[spencerkclark]

Indeed I think this was omitted in #711, since our docs are now hosted on readthedocs. I think we might consider turning on the PR preview feature there. I agree it's nice to have when reviewing documentation PRs. It could also serve the purpose of confirming the doc build succeeded, which we currently have a separate action for.

This feature has been used for a number of years in the xarray repo, and I think it works pretty well.