Added withCSRAuthRequired HOC [SDK-2120]

[Widcket]

Description

This PR adds the withCSRAuthRequired higher-order component that allows to protect client-side rendered pages, with unit tests.

Example usage

import { useUser, withCSRAuthRequired } from '@auth0/nextjs-auth0';

export default withCSRAuthRequired(function Profile() {
  const { user, loading } = useUser();

  return (
    // the page
  );
});

Other changes

• The withPageAuthRequired was renamed to withSSRAuthRequired as I could not find a clean way to have both methods (for SSR and CSR pages) share the same name.
• The hooks folder was renamed to frontend, as it contains the frontend-only code (the useUser hook and the withCSRAuthRequired HOC).
• In use-user.tsx the usage of null was replaced with undefined.
• Some outdated dependencies were updated.

References

Closes #189.

Testing

• This change adds test coverage for new/changed/fixed functionality

Checklist

• I have added documentation for new/changed functionality in this PR or in auth0.com/docs
• All active GitHub checks for tests, formatting, and security are passing
• The correct base branch is being used, if not master

[adamjmcgrath]

lgtm, just spotted a typo

The withPageAuthRequired was renamed to withSSRAuthRequired as I could not find a clean way to have both methods (for SSR and CSR pages) share the same name.

Will investigate this separately