docs: add Hyperframes vs Remotion comparison to README

[Muyideen-js]

Closes #318

Summary

Adds a short Hyperframes vs Remotion section to the README with a pros/cons-style table so people can tell which authoring model and stack fits them.

Motivation

Some areas of the project share implementation patterns with tools like Remotion (browser capture, FFmpeg, etc.). Documenting the product-level differences (HTML-first vs React-first, ecosystem tradeoffs) makes it easier to choose the right tool.

What changed

• New section after Why Hyperframes? with:
  • Brief context on overlap vs differences
  • Table: authoring model, pros, cons
  • One-line rough guide for when to pick each

Checklist

• README only (documentation)

[jrusso1020]

Thanks for taking a swing at this, @Muyideen-js 🙏 — genuinely appreciate the effort to get #318 resolved.

We ended up shipping the comparison through #355 (merged) based on an internal write-up by the team, so it could go deeper on the architectural tradeoffs (library-clock animations, HTML passthrough, visual editing, HDR, licensing) and include a GSAP side-by-side. Closing this one as superseded — but please keep contributing, there's lots more in the issue tracker we could use help on.

[jrusso1020]

Superseded by #355.