feat：add i18n header

(cherry picked from commit a1dbcd1f00)

src/service/request/index.ts

@@ -27,7 +27,10 @@ export const request = createFlatRequest<App.Service.Response, InstanceState>(
       // set token
       const token = localStg.get('token');
       const Authorization = token ? `Bearer ${token}` : null;
-      Object.assign(headers, { Authorization });
+
+      // set language
+      const ContentLanguage = localStg.get('lang') || 'zh-CN';
+      Object.assign(headers, { Authorization, "Content-Language": ContentLanguage });
 
       return config;
     },