Basic example of cross-Router API Context.

[kylorhall]

A very generic 30m example for how to use a react-router-dom and useContext with some API calls.

• Navigates across routes by reading a persisted state with some brief loading + error state (probably could be centralized and checked above the router).
• Treated as a sub-router; /users/:userId and /books/:bookId would work just fine with a slightly amended parent router.
• Can delete a user (API and local state).
• Can restore the user via an optional location.state.deletedUser (eg. a nice-to-have, but not a requirement if the user does lose this location state). Similarly, checks if the user can still be restored incase the location.state has leaked..
• Can force refresh the list of Users.