Allow input socket for Frames, Start Frame and Offset in the Image Texture Node

I was using an animated texture for the first time on multiple objects and realized I couldn't randomize the offsets without creating a new material for each object. If I had access to the offset I could plug the random from the object info, multiplied by some number to randomize the offset. And there may be artistic reasons for the other two while we are there. Such as a video texture with multiple loops within it.