feat: add helper to register TypeBox string formats

[drewnetic]

What’s changed

This PR adds an official helper to register common string formats
(date, date-time, email, uuid, etc.) when using
TypeBoxValidatorCompiler.

Why

Fastify’s default AJV setup enables ajv-formats out of the box,
but TypeBox does not register formats automatically.
This helper avoids copy/paste workarounds and keeps behavior explicit,
without introducing breaking changes.

Notes

• Formats are registered only when the helper is called
• Works for both CJS and ESM builds
• Includes runtime and type tests

Closes #84

Checklist

• run npm run test && npm run benchmark --if-present
• tests and/or benchmarks are included
• documentation is changed or added
• commit message and code follows the Developer's Certification of Origin
  and the Code of conduct

[drewnetic]

Hi @ilteoood, just a gentle ping on this since it's been a few weeks!

As mentioned below, I had already addressed all your feedback. I just pushed a tiny commit today to fix a small typo in the tests (uri to url) and clean up a stray semicolon.

Everything should be good to go now! Let me know if you need anything else.

[drewnetic]

Hi @ilteoood, just a quick update: I noticed the recent architectural changes for TS 5.9, so I went ahead and rebased this branch to resolve the merge conflicts. Everything is properly migrated to the new .ts setup and all tests are green again. Ready whenever you are! 🚀