Implements AI driven pull request description generator

[walmat]

What changed (plus any additional context for devs)

1. New AI Documentation System

File Structure

• Added ai/pull-request-description.md template file
• Created prs/ directory for generated PR descriptions
• Added .gitkeep to maintain prs/ directory in git

Template Implementation

• Added structured markdown template for PR descriptions
• Defined consistent format for documenting changes:
  • Major changes sections
  • Subsections with bullet points
  • TLDR summary section

2. Git Configuration Updates

Gitignore Changes

• Added prs/*.md to .gitignore
• Ensures generated PR descriptions don't get committed
• Maintains clean git history

Documentation

• Added example TLDR format
• Included instructions for template usage
• Provided clear structure for organizing PR changes

3. Process Automation

PR Description Generation

• Added system for automated PR description generation
• Implemented parsing of PR numbers from GitHub URLs
• Created standardized naming convention for PR description files

This PR introduces an AI-powered system for generating structured pull request descriptions, improving documentation consistency and making it easier to understand changes across the codebase.

How to use

@https://patch-diff.githubusercontent.com/raw/rainbow-me/rainbow/pull/<PULL_REQUEST_NUMBER>.diff @pull-request-description.md

Screen recordings / screenshots

n/a

What to test

n/a

[brunobar79]

Launch in simulator or device for d7a20e0