Add zh-HK README translation for README. It was wrote in Traditional Chinese Hong Kong style.
Add Traditional Chinese translation resource and make PKHeX support for tradition Chinese.
Removes a lot of the offset-by-1 indexing, notably in the `GameStrings.GetLocationName` method which shifted everything 1. BDSP files we dumped don't replicate this off by 1, and I don't see a reason to maintain this off-by-1 for prior games since it's unnecessary quirks to maintain.
Zero indexed ftw.
