Small camera updates (#1460, LYN-2315)

* add interpolation for goto position/orientation

* resize default camera look-at point

Code/Sandbox/Editor/EditorViewportCamera.h

@@ -30,6 +30,12 @@ namespace SandboxEditor
     //! @param yaw Amount of yaw in radians.
     SANDBOX_API void SetDefaultViewportCameraRotation(float pitch, float yaw);
 
+    //! Set the camera to interpolate to the given position and orientation.
+    //! @param position The new position of the camera.
+    //! @param pitch Amount of pitch in radians.
+    //! @param yaw Amount of yaw in radians.
+    SANDBOX_API void InterpolateDefaultViewportCameraToTransform(const AZ::Vector3& position, float pitch, float yaw);
+
     //! Get the default viewport camera transform.
     SANDBOX_API AZ::Transform GetDefaultViewportCameraTransform();
 } // namespace SandboxEditor