[DOC] K-NN Vector and Query Support in SQL Plugin

[brijos]

What do you want to do?

• [ ] Request a change to existing documentation
• [X] Add new documentation
• [ ] Report a technical problem with the documentation
• [ ] Other

Tell us about your request. Provide a summary of the request and all versions that are affected. Upon launch of https://github.com/opensearch-project/sql/issues/1615, please update documentation within the k-NN section, SQL, and PPL sections of the documentation.

What other resources are available? Provide links to related issues, POCs, steps for testing, etc.

[kolchfa-aws]

@brijos @acarbonetto Is this on track to be included in the 2.11 release?

[brijos]

Hi there, @kolchfa-aws this is going to slip due to changes in resourcing.