Support for zarr 3

[Zappandy]

Hello, I'm wondering if you guys are considering extending anemoi datasets support to zarr 3 and xarray 2025. Would this break too many functionalities of anemoi-datasets?

[mchantry]

Hello
Thanks for your issue. We do plan to support zarr 3, as there are some exciting functionalities. Currently we haven't identified a timeline for this to be completed.
Do you have a use-case for zarr-3 specifically?

[floriankrb]

related to #220

[darothen]

Bumping this thread - prioritizing Zarr 3 would really help unblock a project we're working on. Tag @pkhapikova for visibility.