devel/R-cran-tidyverse: New port: Easily Install and Load the 'Tidyverse'

• Submitter becomes maintainer

The 'tidyverse' is a set of packages that work in harmony because they share
common data representations and 'API' design.
This package is designed to make it easy to install and load multiple
'tidyverse' packages in a single step.

WWW: https://tidyverse.tidyverse.org/

Differential Revision: https://reviews.freebsd.org/D43735