Merge branch 'add-create-index-script' into 'master'

Script to create and upload docs index and to package registry

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/157444



Merged-by: Rémy Coutable <remy@rymai.me>
Approved-by: Igor Drozdov <idrozdov@gitlab.com>
Approved-by: Rémy Coutable <remy@rymai.me>
Reviewed-by: Rémy Coutable <remy@rymai.me>
Reviewed-by: Igor Drozdov <idrozdov@gitlab.com>
Reviewed-by: Patrick Cyiza <jpcyiza@gitlab.com>
Reviewed-by: Mohamed Hamda <mhamda@gitlab.com>
Co-authored-by: Mohamed Hamda <mhamda@gitlab.com>