Move module mfnf2serlo from modules-kpi to here

feat(kratos): redirect OIDC user to domain for user journey

refactor(enmeshed): add all webhook triggers

refactor(kratos): fix mapper to work without email&username from prov…

…ider

Update nbp issuer url

feat(enmeshed): deploy own mongodb instead of builtin dev db

Somehow the container ferretdb, provided by the enmeshed helm chart,
was refusing connection to the connector container. Sometimes it healed
by itself, but then we had caching problem (since the db was also
deleted). Sometimes it didn't even healed by itself, so that we needed
to delete the pod.

Therefore, tt is more secure to have an extra mongodb instance.

feat(kratos): handle interest for subscribing to newsletter

kratos: format

feat(kratos): add webhook for updating user last login

db: migrate code from infrastructure-modules-serlo.org to here