新增歌词简体中文转繁体中文，当软件语言被设置为繁体中文后，播放歌曲的歌词也将自动转成繁体中文显示

src/main/utils/simplify-chinese-main/.gitignore

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+todo.md
+node_modules/
+npm-debug.log
+yarn-debug.log
+yarn-error.log
+package-lock.json
+tsconfig.tsbuildinfo
+report.*.json
+
+.eslintcache
+.DS_Store
+.idea
+.vscode
+.yarn
+*.suo
+*.ntvs*
+*.njsproj
+*.sln

src/main/utils/simplify-chinese-main/LICENSE.md

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+
+The MIT License (MIT)
+
+Copyright (c) 2021 Shigma
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

src/main/utils/simplify-chinese-main/README.md

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+# simplify-chinese
+
+Convert chinese characters between simplified form and tranditional form / 汉字简繁体转换工具。
+
+```js
+const { simplify, tranditionalize } = require('simplify-chinese')
+
+console.log(simplify('窩窩頭'))         // 窝窝头
+console.log(tranditionalize('窝窝头'))  // 窩窩頭
+```

src/main/utils/simplify-chinese-main/index.d.ts

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+export function simplify(source: string): string
+export function tranditionalize(source: string): string

src/main/utils/simplify-chinese-main/index.js

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+const { simplified, traditional } = require('./chinese')
+
+const stMap = new Map()
+const tsMap = new Map()
+
+simplified.split('').forEach((char, index) => {
+  stMap.set(char, traditional[index])
+  tsMap.set(traditional[index], char)
+})
+
+function simplify(source) {
+  let result = []
+  for (const char of source) {
+    result.push(tsMap.get(char) || char)
+  }
+  return result.join('')
+}
+
+function tranditionalize(source) {
+  let result = []
+  for (const char of source) {
+    result.push(stMap.get(char) || char)
+  }
+  return result.join('')
+}
+
+module.exports = {
+  simplify,
+  tranditionalize,
+}

src/main/utils/simplify-chinese-main/package.json

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+{
+  "name": "simplify-chinese",
+  "description": "Convert chinese characters between simplified form and tranditional form 汉字简繁体转换工具",
+  "version": "1.1.0",
+  "main": "index.js",
+  "typings": "index.d.ts",
+  "repository": "https://github.com/koishijs/simplify-chinese.git",
+  "author": "Shigma <1700011071@pku.edu.cn>",
+  "license": "MIT"
+}