Direct registration link

A relying party may indicate that a user desires to create an account and should see the registration UX, rather than needing to first see the login page and navigate with the registration link. This is done by including prompt with a value of create.

After account creation and other steps (email verification, consent), the OIDC flow will be continued. For the Authorization Code flow, the user will be redirected back to the relying party with an authorization code, for more information, see https://openid.net/specs/openid-connect-prompt-create-1_0.html