feat: add raw media type for model weights files

[aftersnow]

This commit introduces a application/vnd.cnai.model.weight.v1.raw media type. This will be beneficial for large language models, as the model weight files are giant, with individual files reaching up to 10GB and total files nearing 1TB:

• Eliminates compression and archiving overhead, and accelerates build and start speed
• Reduces storage footprint during archiving and unarchiving

Similar PR in oci-spec: https://github.com/opencontainers/image-spec/pull/1197/files

[amisevsk]

I'm not against adding something like this to the spec. Maybe we should consider using a more common media-type to represent that it's just a binary blob, though -- e.g. application/vnd.cnai.model.weight.v1.octet-stream

[aftersnow]

I'm not against adding something like this to the spec. Maybe we should consider using a more common media-type to represent that it's just a binary blob, though -- e.g. application/vnd.cnai.model.weight.v1.octet-stream

Thanks for your suggestion~ My intention with using "raw" was to convey that it hasn't been compressed or TARed. "Octet-stream" also makes sense, but from an ease-of-understanding perspective, "raw" might be slightly more intuitive. Do you think that is OK, or am I still missing something?

[gaius-qi]

Please refer to https://www.iana.org/assignments/media-types/media-types.xhtml#application.

[aftersnow]

Please refer to https://www.iana.org/assignments/media-types/media-types.xhtml#application.

vnd.ipld.raw : https://www.iana.org/assignments/media-types/application/vnd.ipld.raw

[gaius-qi]

LGTM

[chlins]

lgtm