graphics/R-cran-ragg: New port: Graphic Devices Based on AGG

• Submitter becomes maintainer

Anti-Grain Geometry (AGG) is a high-quality and high-performance 2D drawing
library.

The 'ragg' package provides a set of graphic devices based on AGG to use as
alternative to the raster devices provided through the 'grDevices' package.

WWW: https://ragg.r-lib.org/

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