[FEATURE] support sparse vector

[badmonster0]

What is the use case?

https://www.reddit.com/r/Rag/comments/1u7eypx/can_cocoindex_generate_and_store_both_dense/

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[tomz-alt]

assign me

[badmonster0]

@tomz-alt let us know if you plan to do a follow up on this, thanks!

[tomz-alt]

yes, my plan is to support postgres and zvec together with supported qdrant do you have some more inputs on here?

[badmonster0]

sg, thanks @tomz-alt !