v1.4.2-patch.1 - add npm-webpack-demo webpack@5.78, vue@3.4

npm-webpack-demo/src/main.js

@@ -0,0 +1,8 @@
+import { createApp } from 'vue';
+import App from './App.vue';
+import ElementPlus from 'element-plus';
+import 'element-plus/theme-chalk/index.css';
+
+const app = createApp(App);
+app.use(ElementPlus);
+app.mount('#app');