With the new version of Visual Studio bringing C# 12, we can revise our logic for better readability as well as use new methods/APIs introduced in the .NET 8.0 BCL.
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.
Keep the old localizations around for displaying gen6 format memories in their original localization.
I didn't rename the files so the git diff was clean for showing the re-localized lines.
Closes#3302
