Make a package for helpers related to patches

[MichaelChirico]

Basically, a packaged up version of the scripts at https://contributor.r-project.org/translations/Weblate-server.html#to-submit-a-patch-file-on-the-translations-found-in-weblate-but-not-in-the-trunk-of-the-main-r-subversion-repo.

Not completely done package-izing it yet. Checking in for feedback now since I ran out of steam :)

The original motivation here is I started to think about how to generate patches for the Recommended packages, figured it would involve re-using this script with slight edits over & over, rather seems easier to make it a package instead (I hope). I don't intend for this package to be on CRAN, I don't think it's general-purpose enough (certainly not anytime soon). Just a highly-specialized helper package for our purposes here.

I'm not sure if this repo is the right place for this package to live, WDYT @hturner @daroczig?

[daroczig]

great idea, thanks! probably we should add the helper python scripts as well under inst so that we don't have to keep it in the weblate repo and its clone mirror on GH as a backup?

[MichaelChirico]

SGTM; it does mean we'll have to install R 😅 (the reason those are written in Python in the first place)