to_icechunk doesn't have a group option

[rabernat]

This signature

VirtualiZarr/virtualizarr/writers/icechunk.py

Lines 25 to 27 in fcdd5e4

	def dataset_to_icechunk(
	ds: Dataset, store: "IcechunkStore", append_dim: Optional[str] = None
	) -> None:

should include a group option to allow you to put the dataset somewhere other than at the root of the store hierarchy.

[TomNicholas]

Right. I think this basically only requires passing the group kwarg down through to where we create the prefix here

VirtualiZarr/virtualizarr/writers/icechunk.py

Line 274 in fcdd5e4

key=f"{key_prefix}/c/{chunk_key}", # should be of form 'group/arr_name/c/0/1/2', where c stands for chunks

cc @mpiannucci