✨(frontend) add offline mode support

Add a offline mode support from a service worker.
The service worker will cache the assets and the
visited pages to be able to work offline.
Created a fallback page for when the user is offline
and tries to access a page that is not cached.

src/frontend/apps/impress/package.json

@@ -60,6 +60,7 @@
     "stylelint": "16.6.1",
     "stylelint-config-standard": "36.0.0",
     "stylelint-prettier": "5.0.0",
-    "typescript": "*"
+    "typescript": "*",
+    "workbox-webpack-plugin": "7.1.0"
   }
 }