Extension sap user data model

[snoeber]

scimono data model extension for scim extension
urn:ietf:params:scim:schemas:extension:sap:2.0:User
available at
https://api.sap.com/api/IdDS_SCIM/schema

[cla-assistant]

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[hborisov]

Let's find more suitable place/project for these extensions.