[Feature] Add Title to rag__unified_document

[fivetran-joemarkiewicz]

Is there an existing feature request for this?

• I have searched the existing issues

Describe the Feature

The title of the relevant documents have been seen to be important for RAG use cases. As such, we should consider adding the title to the end model.

How would you implement this feature?

We would need to add the relevant document titles to the upstream sources and then persist them downstream to the end model.

Describe alternatives you've considered

No response

Are you interested in contributing this feature?

• Yes.
• Yes, but I will need assistance.
• No.

Anything else?

No response