[Feature Request] Support BSON vectors

[AlekSi]

Purpose of the feature.

There is a new BSON binary subtype: vector. See https://bsonspec.org/spec.html:

Vector - A densely packed array of numbers, all of the same type. This subtype supports the packed binary (1-bit unsigned int), signed 8-bit int, and 32-bit float element types.

It could be used in vector search.

Describe the solution you'd like

I would like this subtype to be supported.

Describe alternatives you've considered

Convert those vectors to arrays in FerretDB.

Additional context

N/A

[lichoil]

latest mongo c driver 1.30.2 hans't included this binary vector type yet, we'll track later version update for inclusion of binary vector, then we can update and add support for this type.

[sivethe]

@lichoil : Looks like mongo c driver v2.0 has support for vector bsontype

https://github.com/mongodb/mongo-c-driver/releases/tag/2.0.0
https://jira.mongodb.org/browse/CDRIVER-5641?jql=text%20~%20%22vector%20bson%22

[lichoil]

yes, we'll upgrade to c driver2.0.

[abinav2307]

@lichoil - can we create a Task and then move it into the DocumentDB Roadmap project?

[patty-chow]

@abinav2307 just created a task based on this issue

[lichoil]

@zinanren is working on this item.