~dricottone/pkgbuilds

ref: e40e5239bdcc6c1416dc0cddfdf0664e93e91b03 pkgbuilds/r-rematch2 d---------
Added r-googlesheets4
Initial commit

A long journey to packaging r-tidyverse. The current highest-level
packages that are successfully built are dtplyr, waldo, callr, and xml2.
A handful of others (brio, digest, praise, units, zeallot) are currently
freestanding but will become dependencies soon.