read_zarr from s3

[j-bac]

Is your feature request related to a problem? Please describe.
It is currently not possible to use read_zarr for an object stored in an s3 bucket

Describe the solution you'd like
reading .zarr from an s3 bucket

[LucaMarconato]

Hi @j-bac thanks for the feature request. We are working on this here #842. But currently we are working on some more urgent PRs so it may take a while to be merged. In meantime, any feedback would be appreciated.