add simple load test and receive test

package.json

@@ -2,6 +2,7 @@
   "name": "mws",
   "version": "0.3.6",
   "license": "MIT",
+  "packageManager": "pnpm@8.3.1",
   "scripts": {
     "dev": "solid-start dev",
     "host": "solid-start dev --host",
@@ -11,6 +12,7 @@
   },
   "type": "module",
   "devDependencies": {
+    "@playwright/test": "^1.34.3",
     "@types/node": "^18.16.15",
     "@typescript-eslint/eslint-plugin": "^5.59.7",
     "@typescript-eslint/parser": "^5.59.7",