Create snap point part

So you have a part without contacts, and actual magnet, and you want it to snap to the grid.

We will have to see what Steel says, but I don't think you can do that.
If you make a fake contact with zero stroke in PCB copper layer it will get drilled, but I suppose it can be 1 pixel in size. If it's for the other views maybe a fake contact with zero stroke in their respective svgs.