feat: i18n,add en and zh-cn language.

src/locales/i18n.ts

@@ -7,18 +7,21 @@ export type Language='en'|'zhCn'
 export const languageList=[
     {
         key:'zhCn',
-        name:'中文'
+        name:'中文',
+        flag:'zh-cn'
     },
     {
         key:'en',
-        name:'English'
+        name:'English',
+        flag:'en-us'
     }
 ]
+export const browserLanguage=navigator.language.toLowerCase().indexOf('zh')>=0?'zhCn':'en';
+const globalConfig=JSON.parse(localStorage.getItem('globalConfig')||'{}').globalConfig||{}
 // 创建i18n
 const i18n = createI18n({
-  locale: JSON.parse(localStorage.getItem("globalConfig")?localStorage.getItem("globalConfig") as string:"{globalConfig:{language:'zhCn'}}").globalConfig.language || "zhCn", // 语言标识
+  locale: globalConfig.language||browserLanguage,
   globalInjection: true, // 全局注入,可以直接使用$t
-  // 处理报错: Uncaught (in promise) SyntaxError: Not available in legacy mode (at message-compiler.esm-bundler.js:54:19)
   legacy:false, 
   messages: {
     zhCn,