Adds Redis Memory extension class

[Justin Cechmanek (justin-cechmanek)]

Why are these changes needed?

This PR adds the RedisMemory class to allow for developers to use Redis vector search for agent memory. Redis vector db offers a persistent store and the ability to semantically search for relevant memories.

Related issue number

None

Checks

• I've included any doc changes needed for https://microsoft.github.io/autogen/. See https://github.com/microsoft/autogen/blob/main/CONTRIBUTING.md to build and test documentation locally.
• I've added tests (if relevant) corresponding to the changes introduced in this PR.
• I've made sure all auto checks have passed.

[Eric Zhu (ekzhu)]

Thanks for the PR. A couple of things:

1. Let's use the module path autogen_ext.memory.redis for the new module.
2. Add API doc to RedisMemory with examples of usage. Make sure the code blocks are checked by pyright, the CI checks the formatting and types of API docs. See python/README.md for information on checks. Many users use the API Reference directly.
3. In the usage guide notebook, can you simplify the setup instructions for the redis example. The example should just refer to the API doc using reference:

{py:class}`~autogen_ext.memory.redisvl.RedisMemory`

[Justin Cechmanek (justin-cechmanek)]

Eric Zhu (@ekzhu) thanks for the review, it's really appreciated.
Are there any other things you would like me to address?

[Justin Cechmanek (justin-cechmanek)]

@microsoft-github-policy-service agree company="Redis"

[Justin Cechmanek (justin-cechmanek)]

Tyler Hutcherson (@tylerhutcherson) if you want to follow along with this PR.

[Eric Zhu (ekzhu)]

Looks like there are a lot of test failures.

[Tyler Hutcherson (tylerhutcherson)]

Looks like there are a lot of test failures.

Hey Eric Zhu (@ekzhu) stepping in for Justin Cechmanek (@justin-cechmanek) to help get us over the finish line here. We are looking into the failures. Looks like part of the issue was a uv.lock update.

Can you try rerunning them again? We will dig to see what parts of our code and tests touch these suites.

[codecov]

Codecov Report

❌ Patch coverage is 78.12500% with 14 lines in your changes missing coverage. Please review.
✅ Project coverage is 79.91%. Comparing base (e26bb1c) to head (e475064).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
...-ext/src/autogen_ext/memory/redis/_redis_memory.py	77.41%	14 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6743      +/-   ##
==========================================
- Coverage   79.92%   79.91%   -0.01%     
==========================================
  Files         233      235       +2     
  Lines       18108    18172      +64     
==========================================
+ Hits        14473    14523      +50     
- Misses       3635     3649      +14     

Flag	Coverage Δ
unittests	79.91% <78.12%> (-0.01%)	⬇️

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