Add a truly-async file response class using ayafileio (IOCP/io_uring/Dispatch I/O)

[Patchouli-CN]

I programmed a python library, for file I/O, how about use it on StaticFiles or any file response class? it's called ayafileio, it's real-async on win/macos/linux, using IOCP/io_uring/dispatch_io

# can use this to check backend info.
import ayafileio
info = ayafileio.get_backend_info()
print(f"Running on {info['backend']} — truly async: {info['is_truly_async']}")

benchmark data:

dataset add-write test

74694 item/s ayafileio VS 14672 item/s aiofiles