feat: Added Traditional Chinese translation

[xTaiwanPingLord]

Description

1. Rename "chinese"(zh) to "simplified chinese"(zh-Hans)
2. Add "traditional chinese"(zh-Hant)

Type of change

• Bug fix (added a non-breaking change which fixes an issue)
• New feature (added a non-breaking change which adds functionality)
• Updated documentation (updated the readme, templates, or other repo files)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

How Has This Been Tested?

• Tested locally with a valid username
• Tested locally with an invalid username
• Ran tests with composer test
• Added or updated test cases to test new features

Checklist:

• I have checked to make sure no other pull requests are open for this issue
• The code is properly formatted and is consistent with the existing code style
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings

Screenshots

[DenverCoder1]

• Rename "chinese"(zh) to "simplified chinese"(zh-Hans)

I think rather than renaming, it could be a copy or left as it is.

Renaming is like removing "zh" which would cause it to no longer work if anyone is currently using it.

As a third possibility, a new code adaptation could be made to support locale aliases (eg. a mapping from zh to zh-Hans) so it doesn't have to be duplicated.)

Ideally, locale=zh should do the same thing before as it will after.

If you have other ideas, feel free to suggest.

[xTaiwanPingLord]

Renaming is like removing "zh" which would cause it to no longer work if anyone is currently using it.

Oops, I did not notice that :|
I changed zh-Hans back to zh.

[DenverCoder1]

Looks great! Thanks for the contribution 🎉