New port: korean/sourcehanserif-otf: Korean font by Adobe designed for user interfaces

Source Han Serif: The second Pan-CJK typeface family from Adobe

This is Source Han Serif K/KR, which supports all four variants in this family
but prioritizes Korean Hanja over other three.

"Source Han Serif supports four different East Asian languages---Simplified
Chinese, Traditional Chinese, Japanese, and Korean---and the 65,535 glyphs in
each of its seven weights are designed to work together with a consistent design
that emphasizes shared elements between the languages while honoring the
diversity of each. Also included is a rich set of Western glyphs supporting the
Latin, Greek, and Cyrillic scripts, which were derived from Source Serif."

• The Typekit, Adobe

WWW: https://github.com/adobe-fonts/source-han-serif

PR: 232188
Submitted by: Hyun Hwang <hyun@caffeinated.codes>
Approved by: miwi (mentor)
Differential Revision: https://reviews.freebsd.org/D19381