Add support for rectilinear chunk grids

[maxrjones]

This is a companion PR to zarr-developers/zarr-python#3802 that adds support for rectilinear chunk grids.

Acceptance criteria:

• Closes #xxxx
• Tests added
• Tests passing
• No test coverage regression
• Full type hint coverage
• Changes are documented in docs/releases.md
• New functions/methods are listed in an appropriate *.md file under docs/api
• New functionality has documentation

[norlandrhagen]

Super excited for this! Just ran into a use-case today that it'll be great for.

[maxrjones]

Super excited for this! Just ran into a use-case today that it'll be great for.

nice! I'll try to get back to this tomorrow. I got a bit behind on development due to travel.

Are you able to share anything about the use-case? I'm supposed to demo this feature at our project wrap-up next week and if it's related to NASA data it could be a good collaboration opportunity.

[norlandrhagen]

Are you able to share anything about the use-case? I'm supposed to demo this feature at our project wrap-up next week and if it's related to NASA data it could be a good collaboration opportunity.

Yeah happy to share a gist or w/e! It's just some subset of CMIP data, so I'm guessing not super great for a demo? But if it's helpful for debugging / real world testing of rectilinear chunk grids, can definitely share it.

[sjperkins]

I've started investigating a VirtualiZarr implementation after getting motivated here:

• icechunk for Radio Astronomy Workflows earth-mover/icechunk#2303

A rectilinear chunk grid would be very helpful for some RLE-encoded data in a legacy Radio Astronomy format.