FR: List of Visual Enhancements for QtFRED

This list concerns improvements specific to the visual element of FRED.

- [ ] A way to preview animations in FRED (Useful where the lab may not suffice, ie. testing if hangar bay doors are big enough without launching into a mission every time)
- [ ] Proper lighting/shadowing preview
- [x] Jump Previews
- [ ] The ability to rotate jump nodes
- [ ] Make it so a camera/effect/weapon-create can come from a waypoint.