➕(app-desk) add luxon to display date

Add luxon to display date in the team description.
The date are internationalized and formatted as the
mockup requested.

src/frontend/apps/desk/package.json

@@ -18,6 +18,7 @@
     "@openfun/cunningham-react": "2.4.0",
     "@tanstack/react-query": "5.22.2",
     "i18next": "23.9.0",
+    "luxon": "3.4.4",
     "next": "14.1.0",
     "react": "18.2.0",
     "react-dom": "18.2.0",
@@ -31,6 +32,7 @@
     "@testing-library/jest-dom": "6.4.2",
     "@testing-library/react": "14.2.1",
     "@types/jest": "29.5.12",
+    "@types/luxon": "3.4.2",
     "@types/node": "*",
     "@types/react": "18.2.56",
     "@types/react-dom": "18.2.18",