Add Japanese translation

[suzuuuuu09]

I am working on the translation into Japanese.
Along with that, I have created more accurate README-JP.md and jp.json, edited LanguageSelector.tsx, i18n.ts and i18nCache.ts and finished all work.

However, as shown in the picture above, the place where it should be displayed as Japanese is displayed as Jp.
How can I display Japanese?

[Specy]

Look here:

genshin-music/src/components/shared/i18n/LanguageSelector.tsx

Line 25 in 3902b5e

const namesMap = {

This map is what will be shown in the language selector option.

Thank you for the Japanese translation!

[Specy]

Ah I just checked, Intl.DisplayNames is used by default to translate the name of the language to the default locale of the device, and for unsupported browsers it defaults to the language map

[Specy]

Ok so, apparently the Japanese locale is ja not jp

const name = new Intl.DisplayNames("ja", { type: 'language' });
console.log(name.of('ja'));

Shows the correct result. You just need to change the locale name from "jp" to "ja" and it should work

[suzuuuuu09]

I have confirmed that it is displayed. thx!

[cangerjun]

@suzuuuuu09 Oh, you're doing it too fast! ああ、あなたのするスピードは速すぎます！