Create video tutorials for Cesium for Unreal Documentation and Guides

[shehzan10]

For our tutorials on https://cesium.com/docs, we'd like to create video tutorials for each of the pages we have.

• [x] Cesium for Unreal Quickstart
• [ ] Cesium for Unreal Getting Started Tutorials
  • [x] Adding Photogrammetry
  • [x] Using Custom Controllers
  • [ ] Placing Objects on the Globe
  • [ ] Building Global Scenes with Georeferenced Sublevels
  • [ ] Transition Between Locations on the Globe
  • [ ] Build a Flight Tracker with Cesium for Unreal

[kring]

@xuelongmu I think most of these are already done, right?

[xuelongmu]

@kring Just the first 3 so far. Planning on doing 3 more hopefully in the next week...