New port: graphics/guetzli
Guetzli is a JPEG encoder that aims for excellent compression density
at high visual quality. Guetzli-generated images are typically 20-30%
smaller than images of equivalent quality generated by libjpeg.
Guetzli generates only sequential (nonprogressive) JPEGs due to faster
decompression speeds they offer.
Approved by: lme (mentor)
Submitted by: Yuri Victorovich <email@example.com>
Differential Revision: https://reviews.freebsd.org/D10074