feat: add RawID to session manager

[melanger]

allow passing already hashed IDs from backends or hashing in a microservice instead

[peppelinux]

Ciao @melanger

unfortunately we have these subject types following the oidc official specs, here:
https://openid.net/specs/openid-connect-core-1_0.html#SubjectIDTypes

Consider to install your own python package and configure it in your oidcop sub functions (you have them in the general configuration)

anyway I ask a revision to other friends that helps in releasing new versions of oidcop

[melanger]

@peppelinux I don't mean it as a new subject type (such as subject_type=raw), but as an alternative implementation of public ID. Maybe it could be RawPublicID? But yes, I can put this into a separate module.

The reason for this proposal is that with PublicID and SubjectID from oidcop it is not possible to use anything else than a SHA256 hash of userID+section_identifier+salt. It is not possible to use a raw user attribute (e.g. I already have eduPersonUniqueID so I do not need to hash it again) or to do other hashing (e.g. use the Hasher microservice in SATOSA instead).

[peppelinux]

@melanger I understand perfectly!
let's take some more days and wait for the revision of roland and nikos, there's no hurry