Chinese/Mandarin/Simplified/Traditional/TW Distinctions

[MarvNC]

In #976 I was wondering if we should separate Chinese into other options if one day proper font support is added (#974).

The main distinctions here are Mainland Simplified, Taiwanese Traditional, Hong Kong Traditional, and Japanese/Korean though there are also other variants like zh-SG and zh-MO as well as many other Sinitic languages that use 字.

But also maybe there is not much demand for further distinctions other than a traditional Chinese option, in which case we could consider zh-Hant and zh-TW.

[foxmean]

I vote for at least zh-Hant & zh-Hans and open for adding later on.