Vectara integration

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Description

This provides an integration with Vectara as a vector DB as well as RAG platform.

Type of change

Please delete options that are not relevant.

• New feature (non-breaking change which adds functionality)
• Documentation update

How Has This Been Tested?

• Unit Test

Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation

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Hey @deshraj - just checking if you have any feedback about the PR

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Hey @deshraj - I wanted to check again whether you can take a look at the PR to see if it works? I just updated it to remove any conflicts so it's up to date with the latest main branch.

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Checking if this can be reviewed please?
@taranjeet

Thank you
Ofer