Support FrameSpeedFactor for AnimatedImageVisual and AnimatedVectorImageVisual

Support FrameSpeedFactor for AnimatedImageVisual and AnimatedVectorImageVisual

Let we make factor for visual that control the speed of image frame animation.

By using speed factor, we can control animated vector image / animated image
frame rendering speed.

For now, we only support the value range as [0.01f 100.0f] for platform safety issue.
(Since it is depend on the thread sleep time. And didn't )
Also we don't implement negative speed factor yet.

Netagive speed factor, and zero speed factor support is TODO.

Change-Id: I53b511d9e9271db1463b54212c95150842981d17
Signed-off-by: Eunki, Hong <eunkiki.hong@samsung.com>