Support for other Single Sign On (SSO) protocols

As an administrator of Xink in our organization, I would like the ability to implement Single Sign on for the administrator accounts with a different authentication provider.

Implementing this is based on one of the protocols such as SAML, OpenID, OpenID Connect, OAuth2. Support of this is going to give our organization more control and management over the accounts. And therefore allow us for example to enforce 2FA in certain situations (conditional 2FA).

As also mentioned in another topic this would fit well with the possibility to provision users with an implementation of SCIM.