feat: Vue 3 Support (#1344)

BREAKING CHANGE: drop vue 2 support

dev/dev.js

@@ -1,8 +1,6 @@
-import Vue from 'vue'
+import { createApp, h } from 'vue'
 import Dev from './Dev.vue'
 
-Vue.config.productionTip = false
-
-new Vue({
-  render: (h) => h(Dev),
-}).$mount('#app')
+createApp({
+  render: () => h(Dev),
+}).mount('#app')