add oidc user relationship / mapping

Add an OidcIdentity table and map it to users so each user has to have an OIDC mapping. The mapping maps an OIDC sub-claim and provider url to a user id.

Each user may only have one identity in one provider.

Apart from this no authentication or automatic user creation based on incoming jwt is done yet. The plan with this is to create User and OidcIdentity entries on the fly for incoming tokens, if they do not exist already. add oidc user relationship / mapping

Add an OidcIdentity table and map it to users so each user has to have an OIDC mapping. The mapping maps an OIDC sub-claim and provider url to a user id.

Each user may only have one identity in one provider.

Apart from this no authentication or automatic user creation based on incoming jwt is done yet. The plan with this is to create User and OidcIdentity entries on the fly for incoming tokens, if they do not exist already.