Possibility to login with OpenID or OAuth services

[AienTech]

Is your feature request related to a problem? Please describe.
No

Describe the solution you'd like
It would be nice if (at least) the administrators could log in using an OAuth or OpenID service.

Additional context
The idea is that a company could have set up a service like keycloak which allows them to manage identities with different realms. It would be very nice if it was possible that the administrator's accounts get connected with the OAuth service and authenticated using it.

It makes sense for admins, but maybe not for the emails.

Is it possible?

[stale]

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