Add Chronos under Testing Frameworks

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Suggestion: add Chronos under Testing Frameworks

Hi — I'd like to suggest Chronos under Testing Frameworks.

Chronos is Deterministic Simulation Testing for Node.js and TypeScript: virtual clock, seeded PRNG, simulated network chaos, Vitest integration, and bit-identical replay from a single seed.

Proposed entry:

* [Chronos](https://github.com/sx4im/chronos) - Deterministic Simulation Testing for Node.js and TypeScript (seed-reproducible races and network chaos).

Docs: https://docs-site-chronos.vercel.app/

Happy to open a PR if preferred.