* formatting changes to AzToolsFramework viewport related types + API comment style updates
* minor format change - include ordering
* improve formatting by moving comment
* fix compile error and switch to use AZ_Printf
* small polish changes after review feedback
* Clarify ViewportWorldToScreen being in widget space and add DeviceScalingFactor
* -Fix viewport icons being draw wrong on high DPI displays
-Fix loading viewport icons from absolute paths, which
* Address review feedback, fix build