Ported uffd code to new ldap mapper

ldap3_mapper_new/__init__.py

ldap3_mapper_new/attribute.py

ldap3_mapper_new/core.py

ldap3_mapper_new/dbutils.py

ldap3_mapper_new/model.py

ldap3_mapper_new/relationship.py

tests/test_mail.py

tests/test_mfa.py

tests/test_oauth2.py

tests/test_role.py

tests/test_selfservice.py

tests/test_user.py

uffd/ldap.py

uffd/mail/models.py

uffd/mail/views.py

uffd/mfa/models.py

uffd/mfa/views.py

uffd/oauth2/models.py

uffd/role/models.py

uffd/role/views.py