Container Registry: improve listing of several images
Context
When looking at a larger registry, like our own https://gitlab.com/gitlab-org/gitlab-omnibus-builder/container_registry, it's hard to find the specific image you want, because there are too many.
Navigating through paginated results doesn't get you far either:
In addition, the search feature can only do substring matching, so you can't easily exclude the ones you know you don't want.
Proposal
Similar to how we handle our groups and projects navigation, we could implement an optional listing using a tree-view structure (that can be expanded and collapsed).
Using this tree-view approach, images can use /multiple/levels/of/namespacing/image
to organize and categorize themselves.
In the gitlab-omnibus-builder
example, if all you want is to look at /staging/
images, you have a clear "folder" to open, or if you want to ignore those, you have again a clear "folder" to close.