[FEATURE] Multi-axis support in `Reorder.Group`

Is your feature request related to a problem? Please describe.

The new Reorder components are great for horizontal and vertical lists, it would be fantastic to have first class support in the same api for re-orderable grids. I also raised this on twitter as the wording in the docs can be read as if this feature already exists.

Describe the solution you’d like

Ideally the axis prop on Reorder.Group would take an additional option axis="xy", or similar. It could be that the reality of dual axis makes the interface more complex, but this would be the ideal.

Describe alternatives you’ve considered

The alternative would be custom building using the drag and drop primitives as pre-5.

[cjoecker]

Just submitted a Pull Request. This is how it is going to look:

[mattgperry]

@cjoecker I don’t know why I’ve not been getting updates to your PR but thanks, I’ll take a look asap although the next week will probably be a little busy with layout animation work