SCIM pagination
What
Paginates SCIM results using count and startIndex as required by https://tools.ietf.org/html/rfc7644#section-3.4.2.4
Why
Needed for compatibility with some SCIM clients, and will be needed for Okta since their initial compatibility test doesn't use a filter.
Closes https://gitlab.com/gitlab-org/gitlab-ee/issues/13094 and #14805 (closed)
Conformity
Edited by James Edwards-Jones