Automation: Milestone 3 and fixes for milestone 2
-Added new EditorShot command to take editor screenshots
-Made the ExterialTool options use the dierctory picker
-Fixed a bug with the StaticMeshEditor test if the tutorial pops up
-StaticMeshUV test now uses async package loading
-Added a display every Nth screenshot to the screenshot compre tab
-Added support to disable screenshots or request full size ones
-Changed the screenshots so they save to the game directory even if you run the frontend by itself
-Added screenshot support for the load all maps tests
[CL 2071712 by kevin hamilton in Main branch]
