add Tair as a datastore

[sandszhouSZ]

Hi @isafulf

I'm excited to open this PR to add support for using 'Tair' as a datastore. Tair is a cloud native in-memory database service that is developed by Alibaba Cloud. Tair is compatible with open source Redis and provides a variety of data models and enterprise-class capabilities to support your real-time online scenarios.Tair offers a powerful vector extension, processing billions of data vectors and providing a wide range of features, including indexing algorithms, structured attrs and unstructured vector capabilities, real-time updates, distance metrics, scalar filtering. Additionally, Tair offers SLA commitment for production use. The PR includes:

Tair as a Datastore Store embeddings and attrs into Tair Calculate documentchunk similarity using Tair Updated README.md and add setup.md A suite of integration tests verifies the Tair integration

[sandszhouSZ]

Any suggestions are very welcome！

[sandszhouSZ]

@isafulf Can you take a look at the PR? thanks

[sandszhouSZ]

@isafulf Hi there! I hope you're doing well. It's been tree weeks since I opened this pull request, and I would really appreciate your feedback. If you could take a moment to review my proposed changes, I'd be grateful. I'm eager to contribute to this project, and your timely feedback would help me ensure that my code gets merged as soon as possible. Thank you in advance for your attention and support!

[sandszhouSZ]

@isafulf Can you take a look at the PR? thanks