* add find entity in viewport functionality to new camera
* fix AZ_CVAR usage
* updates following review feedback
- updated comment styles from /// to //!
- retrieve fov of camera (add test for fov access)
* update namespace naming, fix AZ_CVAR usage
* update missed namespace and use AZ::Transform::CreateLookAt
* add missing include
* move EditorViewportSettings to EditorLib
* update DLL import/export API and rename namespace usage