[CT-2202] Add a view of all public models with the same group

[MichelleArk]

[emmyoop]

Possibly add a new tab on the left project view for models by group. Timebox to 1 day.

[emmyoop]

Is this the type of thing we're thinking? This shows 2 separate groups. Only the models not marked as private are showing. It is just a list of the models, ignoring where the files live.

[MichelleArk]

Yes! This is exactly what I was thinking. But now that we've got 'protected' in addition to 'public' and 'private' access, I wonder if it'll be confusing to call this view Public Models. Especially if we're only excluding private models in this view.

Users looking at the docs from other projects will be interested in only public models, whereas users within the project will be interested in both public and protected models. So I think it's valuable to include both! Perhaps we continue to call the view 'Public Models', include both public and protected models, but distinguish protected models in the model name? Something like:

Public Models: 
nested_group/
  top-model-public
  top-model (protected)
some_group/
  even_id_table

[emmyoop]

Updated icon and added a (protected) string at the end of models.