Add redis vectordb

[tylerhutcherson]

Description

This PR includes Redis as a vector database to Embedchain using the new, purpose-built redisvl python library. Given work was already started using base redis-py, I wanted to also highlight the work started here (#756) by @SudhanshuJoshi09. This simplifies the codebase a good bit (for redis) and also includes more explicit metadata filtering via "Tag" fields in Redis. It also updates documentation, adds an example notebook, and config examples.

FYI @deshraj I'd love to get any additional feedback here. The version of redisvl used to build this will be released later this week (so I am tied to a github branch atm). But I wanted to get a head start.

Fixes # (issue)

Type of change

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

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

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• Unit Test
• Test Script (please provide)

Checklist:

• My code follows the style guidelines of this project
• 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
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules
• I have checked my code and corrected any misspellings

Maintainer Checklist

• closes #xxxx (Replace xxxx with the GitHub issue number)
• Made sure Checks passed

[tylerhutcherson]

Hi @deshraj @taranjeet We are interested in getting this merged soon if possible. What else is required? I've pinned to a supported version of redisvl and updated tests and contributed docs and notebook examples.