Strategy for authenticating using Auth0.

This strategy builds on-top of AshAuthentication.Strategy.Oidc and assent.

In order to use Auth0 you need to provide the following minimum configuration:

• client_id
• redirect_uri
• client_secret
• base_url

As of Assent v0.3.0, the Auth0 strategy uses OpenID Connect (OIDC) and automatically retrieves configuration (token URL, user info URL, etc.) from Auth0's discovery endpoint.

More documentation:

• The Auth0 Tutorial.
• The OIDC documentation