Pokerchips should stack to avoid item spam

[fed-cap24]

I believe this could be fixed by implementing the snap position method I mentioned in another issue, since one of the actions could be "Stack", and it could be applied to multiple things, like cards, pieces positions, etc.

[Chuckleberry-Finn]

16c8efd3090f12a9cbf68d0ac3e456cfd9d82fea