Managing storage space on large GitLab instances, such as GitLab.com, can be a challenge. At the moment, we only have a restriction on repository limits, but no restriction on most of the other items that can consume storage space: wiki, lfs objects, artifacts, and packages, to mention a few. We want to facilitate a method for easily viewing the amount of storage consumed by a group and allow easy management on GitLab.com by setting storage and limits management for groups. But to do that we nee...