chore: init play ground

Author: zhiyuanzmj

playground/package.json

@@ -0,0 +1,22 @@
+{
+  "type": "module",
+  "scripts": {
+    "start": "node ./script/cli.mjs",
+    "sg": "ast-grep scan -c ./ast-grep/sgconfig.yml -U ./fixtures",
+    "build": "unbuild",
+    "dev": "unbuild --stub",
+    "bench": "UV_THREADPOOL_SIZE=8 node bench/ms.js",
+    "test": "vitest",
+    "release": "bumpp && pnpm publish",
+    "prepublishOnly": "pnpm run build"
+  },
+  "dependencies": {
+    "@vitejs/plugin-vue": "^4.5.0",
+    "@vitejs/plugin-vue-jsx": "^3.1.0",
+    "unplugin-vue-macros": "^2.7.0"
+  },
+  "devDependencies": {
+    "@vue-macros/volar": "^0.17.3",
+    "vite": "^5.0.2"
+  }
+}