Allow for Custom Folders in Scene Panel

[Monkey Frog Studio]

It would be a great organizational tool if we could create custom folders in which to place stuff in the Scene panel. For example, I could create a custom folder and name it 'Control Room'. Then I could place all objects in my scene (brushes, models, lights, probes, etc.) that are a part of the control room of that level in that one folder. This would not only allow for better organization but also make the scene panel more readable. Instead of a giant list under models, for example, there would be folders that the end-user has set up to organize where everything is.