Llama Email Agent

[jeffxtang]

What does this PR do?

An app that shows how to build a Gmail agent app powered by Llama 3.1 8B running locally via Ollama, with custom tool calling natively supported in Llama 3.1.

Fixes # (issue)

Feature/Issue validation/testing

Please describe the tests that you ran to verify your changes and relevant result summary. Provide instructions so it can be reproduced.
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• Test A
  Logs for Test A

• Test B
  Logs for Test B

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• This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case).
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Thanks for contributing 🎉!

[heyjustinai]

i like this use case! can you also add a test plan in PR please (screen shot or video of the agent working)

[jeffxtang]

i like this use case! can you also add a test plan in PR please (screen shot or video of the agent working)
Thanks for the review. Adding a test plan would be a bit too much work at this stage, but I'll add this task in the TODO. Yes some screenshots and demo video would be nice - will add them.