[Feature Request] Have options to allow only OIDC login

[bartolomesoriano]

At the moment, tested with Authentik, you always get the login screen, and when you click on the Login with OIDC button does it redirect to Authentik. Other apps which support OIDC have options such as "Hide login fields if OAuth2 is enabled" and "Automatic OAuth2 login" (these are the options in Komga), or "Auto Launch" which redirects automatically to the auth provider (this is what Audiobookshelf does, as well as allowing to disable password login).

Please implement options such as these so that you get the auth provider (Authentik, for example) immediately without seeing the login screen. This seems to be a more secure approach, plus it provides for a consistent login experience when you use OIDC. Thanks.