[REQUEST] OIDC Support

[Tim-Grube]

Is your feature request related to a problem? Please describe.
Using this in an organization means one more software, where admins have to manage accounts.

Describe the solution you'd like
Implementing OICD support would get rid of that issue for more sophisticated infrastructure.

Further features for this would be:

• Being able to disable either direct or sso logins
• Configuring oicd from the gui?

[luggesexe]

This is a gread idea! Please also consider setting the option to sync the groups attribute and save the group identifiers for ADMIN/USER. That way an org could just add a group membership.

PS: It is OIDC (from (o)pen(id)(c)onnect ) ^^

[Tim-Grube]

Will work on this in v1.2.0. The current PRs will refactor the backend and config a bit, so starting this simultaneously will result in a lot of merge-work 👍