test(dev): reorganize play (#3764)

play/.gitignore

@@ -1 +0,0 @@
-*.vue

play/main.ts

@@ -1,8 +1,8 @@
 import { createApp } from 'vue'
-import Play from './play.vue'
+import App from './src/App.vue'
 
 import '@element-plus/theme-chalk/src/index.scss'
 
-const app = createApp(Play)
+const app = createApp(App)
 
 app.mount('#play')

play/src/.gitignore

@@ -0,0 +1,2 @@
+*
+!.gitignore

play/vite.init.ts

@@ -1,8 +1,8 @@
 import { existsSync, writeFileSync, readFileSync } from 'fs'
 
-const play = 'play.vue'
-const example = 'play.example'
+const app = 'src/App.vue'
+const example = 'app.example'
 
-if (!existsSync(play)) {
-  writeFileSync(play, readFileSync(example))
+if (!existsSync(app)) {
+  writeFileSync(app, readFileSync(example))
 }