new page - challenge/[github-project-name]

[BrianJenney]

When a user clicks on a project from the /challenges page it should lead to a new page with the readme and a link to open the project in a codespace (same as what is currently on the challenges page).

The card on /challenges should no longer have an option to open the codespace but instead link to this new page.

In order to fetch the readme - you will likely need to create an API to fetch the repo, grab the readme and then format it nicely on the page.

There is no design for this page - it should be mobile responsive. The title of the challenge will be at top, the readme will be next and finally a button to open the codespace (same as on previous page)