OIDC Scope Implementation

[tbelway]

Dawarich has now implemented OIDC! W00t!

That being said, it would be nice if OIDC Scope was implemented a scope definition for OIDC based authorization.

The current variables are:

General Auth

ALLOW_EMAIL_PASSWORD_REGISTRATION

OIDC Auth

OIDC_AUTO_REGISTER
OIDC_CLIENT_ID
OIDC_CLIENT_SECRET
OIDC_ISSUER
OIDC_REDIRECT_URI
OIDC_PROVIDER_NAME

And I would propose adding:
OIDC_ADMIN_GROUP
OIDC_USER_CLAIM
OIDC_USER_GROUP