Merge branch '458258-introduce-anti-abuse-model' into 'master'

Add a new model that will handle abuse report notes

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/156146



Merged-by: Rutger Wessels <rwessels@gitlab.com>
Approved-by: Abhilash Kotte <akotte@gitlab.com>
Approved-by: Adam Hegyi <ahegyi@gitlab.com>
Approved-by: Rutger Wessels <rwessels@gitlab.com>
Reviewed-by: Jarka Košanová <jarka@gitlab.com>
Reviewed-by: Rutger Wessels <rwessels@gitlab.com>
Co-authored-by: Jarka Košanová <jarka@gitlab.com>