'Size/Pos' filter -> Spin Up/down or SlideBars

The next version 20.09 includes a Size, Position, and Rotate filter that takes inspiration from @Namna’s QML. Rotate and Scale will be hidden so no longer available but still loads into old projects. A Zoom slider spinner is also added, and it simply drives the Position and Size in Fill mode only. Also, Position and Zoom get spin boxes.