Fix (timeline) add support for editor preview of timeline for rotation<x,y,z>, scale<x,y,z>

In conjunction with the earlier runtime support for using C3's timeline to control the 3DObject rotation<x,y,z> and scale<x,y,z> properties, the addon also supports doing preview of the timeline in the editor, thanks to additional SDK support from DiegoM at Scirra.

https://www.construct.net/en/forum/new-post?topicID=178735