✨(demo) new demo

This new demo aims to take advantage of all the new Cunningham's
components. The old demo was kind of a draft, this new one gives
a better overview of what Cunningham is capable of.

apps/demo/package.json

@@ -11,6 +11,7 @@
     "preview": "vite preview"
   },
   "dependencies": {
+    "@faker-js/faker": "8.3.1",
     "@openfun/cunningham-react": "*",
     "@openfun/cunningham-tokens": "*",
     "@openfun/typescript-configs": "*",