Add support for more tech stack icons

[aaaalabs]

Description:
Expand the icon_fetcher.py name mapping to support more technologies.

Currently supported: Cursor, Claude, Next.js, Supabase, React, TypeScript, Python, Tailwind, Stripe, FastAPI, GitHub API, Vercel.

Todo:

• Add 20+ more popular tech stack mappings to agents/icon_fetcher.py (lines 25-40)
• Test with example YAML files
• Update documentation with supported technologies

Good for: First-time contributors, no design skills needed!

Files to edit: agents/icon_fetcher.py

Resources:

• SimpleIcons directory: https://simpleicons.org/
• Check slug names at: https://github.com/simple-icons/simple-icons/blob/master/slugs.md