Add login with OIDC

[cstby]

Audiobookshelf allows using OIDC for authentication. For those of us who have password login disabled and only use OIDC, it would be helpful to have a button to log in with OIDC on the login screen.

[GrakovNe]

Hi!
Thank you for the issue

SSO login through supported by the server provider in the roadmap for now. I'll keep this issue open to give a way to track the progress until it's has been done

[Eschguy]

I'll add a +1 to this. I only allow SSO through Authentik, which is a hard stop in using this app.