Add more pages to the examples

[lucavenir]

This should help understanding navigation a little better.

• [x] Add a listview in the home page / user page / admin page / guest page
• [x] Add DetailsRoute with a simple mocked API request
• [x] Cache the values for 2 minutes
• [x] Let users hop back and forth these details page and see the caching strategy integrated with go router in action