Zarr 3 support for distributed

[felixS27]

Before you fill out this form:

Did you review the FAQ?

• [ x] Yes, I reviewed the FAQ on the cellpose ReadTheDocs

Did you look through previous (open AND closed) issues posted on GH?

• [ x] Yes, I searched for related previous GH issues.

Now fill this form out completely:

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

Zarr upgraded their file storage format to a new version (v3) and changed some of their function interfaces (zarr.open does only accept zero or one positional argument). When using cellpose distributed one needs to install zarr <3 into the environment and save the images in zarr v2 format. In order to still be able to use cellpose distributed with v3 zarr arrays it would be nice to update the corresponding functions

Describe the solution you'd like

A simple update of the functions interface relevant to zarr (which is just the zarr.open)

Describe alternatives you've considered

Additional context

I forked the repo and just changed one or two lines of codes.

Thanks you so much for the tool and all the hard work.