Support chws/vchw OpenType font features

[tats-u]

c.f.: https://github.com/googlefonts/chws_tool

This will make it possible to realize the text-spacing-trim CSS property outside browsers, or DTP or word processor software.

I wonder if Noto Sans supports them. c.f. https://qiita.com/Daiji256/items/4b807353c1ca55a26a26#android-%E3%81%AB%E6%90%AD%E8%BC%89%E3%81%95%E3%82%8C%E3%82%8B%E6%97%A5%E6%9C%AC%E8%AA%9E%E3%83%95%E3%82%A9%E3%83%B3%E3%83%88%E3%81%AB%E3%81%A4%E3%81%84%E3%81%A6 (Japanese)