Update script to install playwright before tests run

Author: GeekTrainer

client/package.json

@@ -7,7 +7,7 @@
     "build": "astro build",
     "preview": "astro preview",
     "astro": "astro",
-    "test:e2e": "npx playwright test"
+    "test:e2e": "npx playwright install && npx playwright test"
   },
   "dependencies": {
     "@astrojs/node": "^9.3.0",