UE4 remove all unused files AUTOMATIC (Editor Script)

Here is the current wip of my cleanup script. I added a feature I was missing for quite a long time in Unreal. Getting rid off all the unused files without the need to merge everything to a new scene. Watch the current progress here: https://forums.unrealengine.com/unreal-engine/marketplace/1591076-clean-me-up-scotty-project-cleaning-and-organising-tool