Potentially incompatible cross platform language codes

[farynaio]

Android and iOS use a bit different sets of language codes for some languages.
For example, for Chinese, iOS use zh-Hans and zh-Hant, while Android uses zh-CN and zh-TW.
The package doesn't allow to provide set of codes per platform, so I guess that would be broken on one or the other os.
If that case is handled, @jakex7 can you please provide information how that can be setup?

Thanks, for very helpful tool