I saw this custom inspector icon in a video recently and I think it could be very useful for a custom Editor I am creating at the moment. I have not been able to find any info about how to creat it though, so I was wondering if anyone knew how, or if it might have been something that the video creator added himself.
The Item boxed in red is what I am looking to create. If anyone has any information on how it is created or how one might go about created it from scratch I would much appreciate it.