feat(cli): pc 组件预览支持 i18n (#8346)

docs/site/entry.js

@@ -0,0 +1,12 @@
+import { DemoLocaleMixin } from './demo-locale';
+import Lazyload from '../../src/lazyload';
+
+const { app } = window;
+if (app) {
+  // helper for demo locales
+  app.mixin(DemoLocaleMixin);
+
+  app.use(Lazyload, {
+    lazyComponent: true,
+  });
+}