feat: 添加日语和韩语国际化，并且优化语言相关代码

src/i18n/lang/zh-Hant/index.ts

@@ -1,29 +0,0 @@
-import artist from './artist';
-import common from './common';
-import comp from './comp';
-import donation from './donation';
-import download from './download';
-import favorite from './favorite';
-import history from './history';
-import login from './login';
-import player from './player';
-import search from './search';
-import settings from './settings';
-import songItem from './songItem';
-import user from './user';
-
-export default {
-  common,
-  donation,
-  favorite,
-  history,
-  login,
-  player,
-  search,
-  settings,
-  songItem,
-  user,
-  download,
-  comp,
-  artist
-};