New features
* `get_id_email` method on OAuth2 client to retrieve user id and email. [[Documentation](https://frankie567.github.io/httpx-oauth/oauth2/#get_id_email)]
* `OAuth2AuthorizeCallback` for FastAPI can now generate the callback route based on the path route name. [[Documentation](https://frankie567.github.io/httpx-oauth/fastapi/#oauth2authorizecallback)]