add granian

[zffocussss]

What is this Python project?

a asgi/wsgi/rsgi http server

What's the difference between this Python project and similar ones?

Enumerate comparisons.

1. Have a single, correct HTTP implementation, supporting versions 1, 2 (and eventually 3)
2. Provide a single package for several platforms
3. Avoid the usual Gunicorn + uvicorn + http-tools dependency composition on unix systems
4. Provide stable performance when compared to existing alternatives

--

Anyone who agrees with this pull request could submit an Approve review to it.