Support for OpenAI realtime API

[Boscop]

I'm curious if you are planning to add support for the OpenAI realtime API?
That would also be very useful :)

[albertocavalcante]

Docs: https://platform.openai.com/docs/guides/realtime

[64bit]

For Realtime there's initial support via types , contributions to examples/realtime #277, #278 , #279 are welcome, it would help drive the evolution of crate for realtime support specially audio upload and playback.