Add Cookbook: Using the OpenAI Agents SDK to Automate Stripe Dispute Responses

[danbell-openai]

Summary

This PR introduces a new cookbook demonstrating how to leverage the Agents SDK to automate dispute management workflows using the Stripe API. It provides step-by-step instructions to build agentic applications that can triage, accept, or investigate customer disputes automatically. The goal is to showcase a practical application for the new Agents SDK.

Motivation

The Agents SDK is newly released and we don't have any cookbooks demonstrating its capabilities. This cookbook is essential as it provides a practical, real-world example illustrating how developers can leverage the SDK to automate complex workflows—specifically dispute management using Stripe.

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