feat: add stackblitz playground

common/play/templates/main.js

@@ -0,0 +1,12 @@
+import Vue from 'vue'
+import App from './App.vue'
+import 'focus-visible'
+import 'veui-theme-dls/dist/dls.esm'
+import 'veui-theme-dls-icons/dist/icons.esm'
+import 'veui/dist/locale.{{locale}}.esm'
+
+Vue.config.productionTip = false
+
+new Vue({
+  render: (h) => h(App)
+}).$mount('#app')