Support Remote Whisper.cpp Instances

[cotsuka]

I already have a working, remote Whisper.cpp instance. It seems the only way to integrate it with Home Assistant is through this proxy service, but there's no way to point it towards the already running instance (as far as I can tell).

[Fade07w]

Same... I really don't want to spin up another whisper instance when my fastAPI setup is running perfectly for other uses.