Merge branch 'docs-nw-gcp-geo-url-setup' into 'master'

Geo: Add docs for setting up a Geo-Based URL in GCP

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/99255



Merged-by: Achilleas Pipinellis <axil@gitlab.com>
Co-authored-by: nwestbury <nwestbury@gitlab.com>