Support decompressing Chunks with Blosc AUTOSHUFFLE (-1)

[fm3]

When decompressing zarr chunks we got this message from JBlosc:

blosc: shuffle type not supported: '-1'; expected one of 0 (NOSHUFFLE),1 (BYTESHUFFLE),2 (BITSHUFFLE)

According to this document, -1 is AUTOSHUFFLE. There, bit-shuffle will be used for buffers with itemsize 1, and byte-shuffle will be used otherwise. The default is SHUFFLE.

If AUTOSHUFFLE, bit-shuffle will be used for buffers with itemsize 1, and byte-shuffle will be used otherwise. The default is SHUFFLE.

We should either update to a Blosc lib that supports this AUTOSHUFFLE directly or mutate its input so that we do the byteshuffle-bitshuffle switch as described by this specification.

Context and example zarr dataset: https://scm.slack.com/archives/C02H5T8Q08P/p1738766454436339