RFE: obtain user information from oauth2 token when user is created

[rtheys]

Hi,

Roundcube can be configured to automatically create new users upon first login. If roundcube is configured to use oauth2 authentication, it sets the displayname to the username and generates the email address based on the username.

It would be nice if the values for the display name, email address, etc. could be taken from the oauth2 token so the user does not have to configure it (if they are present in the ID token).

Regards,
Rik