This PR adds support for the OIDC end_session_endpoint for V2 tokens. Sending an id_token_hint as parameter will directly terminate the underlying (SSO) session and all its tokens. Without this param, the user will be redirected to the Login UI, where he will able to choose if to logout.
This PR adds support for userinfo and introspection of V2 tokens. Further V2 access tokens and session tokens can be used for authentication on the ZITADEL API (like the current access tokens).
This PR starts the OIDC implementation for the API V2 including the Implicit and Code Flow.
Co-authored-by: Livio Spring <livio.a@gmail.com>
Co-authored-by: Tim Möhlmann <tim+github@zitadel.com>
Co-authored-by: Stefan Benz <46600784+stebenz@users.noreply.github.com>
