Add crc32c

[agriyakhetarpal]

Description

This PR adds the crc32c package and closes #4787. crc32c is a required dependency for the upcoming version 3 for Zarr.

Checklists

• Add a CHANGELOG entry
• Add / update tests
• Add new / update outdated documentation

Additional context

xref: zarr-developers/zarr-python#1903

[agriyakhetarpal]

The logs are reporting a ModuleNotFound error for import crc32c, and there is no error trace. Maybe I need to do import crc32c inside @run_in_pyodide(packages=["crc32c"])? I just pushed f2d1cdf, let me see if that fixes it.

[ryanking13]

Thanks! The pytest is complaining about the NameError: name 'as_individual_bytes' is not defined.

[agriyakhetarpal]

The tests should pass now, thanks, @ryanking13! I guess @run_in_pyodide is sandboxed from the rest of the code or something – I moved as_individual_bytes() to inside the test so that it can be accessed by test_piece_by_piece directly. Ready for review/merging.

[hoodmane]

Thanks!