enh: better voice interactions

[tjbck]

• voice message recording like imessage
• siri-esque real time voice interaction

[IIPedro]

Hello! I'm unaware if work has been done about this topic yet, but it would be interesting to see better voice interactions as part of pipelines. Of course, it should be the front-end's job to provide an easy to use and comfortable interface, but I believe both siri-esque interaction and voice calls can be tackled in one go with a new pipeline function. Just like there's a pipe def in pipelines, it would be very useful to have a voice def that takes an audio buffer as input in a previously determined rate and returns another audio buffer, which would be the assistant's voice in the call. That would make voice interactions as versatile as current chat pipelines and would allow for the support of various libraries and APIs in a standardized manner. Thanks!