Keep reference when member callback excute + Make NPatchData as RefObject

Keep reference when member callback excute + Make NPatchData as RefObject

Some CallbackBase didn't hold the reference of itself.
So it was possible to call destructor of itself during it's
API was running.

It might makes some unknown issues. So let we keep reference
for some issue-comes known APIs : SvgVisual, NPatchData, and lottie

It future, we should discard visuals rather than delate it directly.

Change-Id: Ibeab31bc309869aa7c2ee65cbff8789e7bb2a721
Signed-off-by: Eunki, Hong <eunkiki.hong@samsung.com>