[WIP] add new cookbook for codex-jira

[narenoai]

Summary

Added a comprehensive tutorial on automating Jira and GitHub workflows with codex-cli. This notebook demonstrates how to create an end-to-end workflow that automatically converts Jira tickets to GitHub PRs using AI automation, with consistent image formatting and clear documentation.

Motivation

This tutorial fills a gap in the cookbook by showing how to integrate OpenAI's codex-cli tool into development workflows. It demonstrates practical automation that can save engineering teams significant time by removing manual steps between ticket creation and code implementation. The integrated workflow shows real business value of AI coding assistants in a production environment.

---

For new content

When contributing new content, read through our contribution guidelines, and mark the following action items as completed:
[x] I have added a new entry in registry.yaml (and, optionally, in authors.yaml) so that my content renders on the cookbook website.
[x] I have conducted a self-review of my content based on the contribution guidelines:
[x] Relevance: This content is related to building with OpenAI technologies and is useful to others.
[x] Uniqueness: I have searched for related examples in the OpenAI Cookbook, and verified that my content offers new insights or unique information compared to existing documentation.
[x] Spelling and Grammar: I have checked for spelling or grammatical mistakes.
[x] Clarity: I have done a final read-through and verified that my submission is well-organized and easy to understand.
[x] Correctness: The information I include is correct and all of my code executes successfully.
[x] Completeness: I have explained everything fully, including all necessary references and citations.