Theme switch support (#3568)

### What problem does this PR solve?
- [x] New Feature (non-breaking change which adds functionality)

---------

Co-authored-by: Yingfeng <yingfeng.zhang@gmail.com>
Co-authored-by: Jin Hai <haijin.chn@gmail.com>

web/src/routes.ts

@@ -77,6 +77,10 @@ const routes = [
             path: '/user-setting/profile',
             component: '@/pages/user-setting/setting-profile',
           },
+          {
+            path: '/user-setting/locale',
+            component: '@/pages/user-setting/setting-locale',
+          },
           {
             path: '/user-setting/password',
             component: '@/pages/user-setting/setting-password',