add an e2e script

Author: Shane Osbourne

package.json

@@ -41,7 +41,8 @@
     "playwright": "playwright test",
     "playwright-headed": "playwright test --headed",
     "preplaywright": "npm run build-windows && npm run build-apple",
-    "preplaywright-headed": "npm run build-windows && npm run build-apple"
+    "preplaywright-headed": "npm run build-windows && npm run build-apple",
+    "playwright-e2e": "E2E=true playwright test --project duckplayer-e2e --headed"
   },
   "type": "module",
   "workspaces": [