Add PagesDeployments to Project type

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/154104



Merged-by: Adam Hegyi <ahegyi@gitlab.com>
Approved-by: Josianne Hyson <jhyson@gitlab.com>
Approved-by: Aboobacker MK <akarakath@gitlab.com>
Approved-by: Vitali Tatarintev <vtatarintev@gitlab.com>
Approved-by: Adam Hegyi <ahegyi@gitlab.com>
Reviewed-by: Josianne Hyson <jhyson@gitlab.com>
Co-authored-by: janis <jaltherr@gitlab.com>