Editor QOL: 3D Cursor

[socialtwisty]

I'm sure this could cause plenty of debate, but I think it would be tremendously useful. It could be off by default and not get in anyones way if they don't want it.

Minimally it would be nice to have this to act as a location override for where new scene entities be placed or where loaded files be placed upon import.

[turanszkij]

This would be good, I wanted something like this too.