Add support for slowapi

[JouseJG]

Hello Cloudflare Workerd team,

I am writing to request the inclusion of the slowapi package in the Python environment supported by workerd. slowapi is an essential tool that enables efficient and simple implementation of request rate limiting in web applications developed with FastAPI. This package uses a simple syntax and integrates seamlessly with FastAPI, providing a robust mechanism to prevent abuse of API resources and ensure fairness of access for all users.

The ability to limit the rate of requests is crucial to protect web applications from overloading and ensure that high traffic loads are handled efficiently, especially in production environments where performance and stability are priorities. By including slowapi in workerd, they will enable developers to implement these important features directly into their Cloudflare Workers hosted applications, thereby improving the developer experience and the quality of service offered to end users.

I would greatly appreciate your consideration of this request and would be happy to provide further details or participate in testing to facilitate slowapi integration.

Thank you for your attention and continued support to improve the development ecosystem at Cloudflare Workers.