feat(ai-cookbooks): Github Copilot BYOK recipe

[tomek-labuk]

Description

Fixes #issue

Preview Links

Checklist

• Tested how-to docs. If not, note why here.
• All pages contain metadata.
• Any new docs link to existing docs.
• All autogenerated instructions render correctly (API, decK, Konnect, Kong Manager).
• Style guide (capitalized gateway entities, placeholder URLs) implemented correctly.
• Every page has a description entry in frontmatter.
• Add new pages to the product documentation index (if applicable).

[netlify]

✅ Deploy Preview for kongdeveloper ready!

Name	Link
🔨 Latest commit	f9092a0
🔍 Latest deploy log	https://app.netlify.com/projects/kongdeveloper/deploys/6a33b31d203c3a0008d1aadb
😎 Deploy Preview	https://deploy-preview-5616--kongdeveloper.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.
🤖 Make changes	Run an agent on this branch

---

To edit notification comments on pull requests, go to your Netlify project configuration.

[Copilot]

Pull request overview

This PR adds a new AI Gateway cookbook that explains how to route GitHub Copilot BYOK Custom Endpoint traffic through Kong for per-developer authentication, request normalization, and token-based rate limiting, including an optional Konnect dashboard setup.

Changes:

• Introduces a new cookbook page with prerequisites, architecture explanation, and end-to-end apply/cleanup steps for OpenAI, Azure OpenAI, and AWS Bedrock.
• Documents a Pre-function + Key Auth pattern to map Copilot’s Authorization: Bearer … header into apikey for Consumer attribution and enforcement.
• Adds a scripted flow to create a “Copilot Usage” custom dashboard in Konnect, pre-filtered to the recipe’s Gateway Service.