Added option to filter projects by full paths in GraphQL

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/133596



Merged-by: Stan Hu <stanhu@gmail.com>
Approved-by: Alex Buijs <abuijs@gitlab.com>
Approved-by: Stan Hu <stanhu@gmail.com>
Approved-by: Alex Ives <aives@gitlab.com>
Approved-by: Evan Read <eread@gitlab.com>
Reviewed-by: Niklas <mc.taucher2003@gmail.com>
Reviewed-by: Mehmet Emin INAC <minac@gitlab.com>
Co-authored-by: Marco Zille <marco.zille@gmail.com>
Co-authored-by: Marco Zille <marco.z@mediastudio.it>