Extend TSkCodec with methods for animated images

[schupeta]

It would be great if ISkCodec/TSkCodec could be extended to detect frames from animated images.
I am aware that animated images can already be detected/displayed via TSkAnimationCodecPlayer.

However, what I need is the ability to access specific frame information (width, height, duration, etc).
In SkCodec.h there are the methods getFrameInfo, getFrameCount, getImage (with the specification of a frame index), etc. for this purpose.

It would be great if these methods could be provided as well.