Support OpenAI Whisper API

[ftnext]

• https://openai.com/blog/introducing-chatgpt-and-whisper-apis
• https://platform.openai.com/docs/guides/speech-to-text/quickstart

[ventz]

@ftnext Would it be possible to add the 4-5 lines needed to make this Azure compatible too?

openai.api_version = OPENAI_API_VERSION
openai.api_type = OPENAI_API_TYPE
openai.api_key = OPENAI_API_KEY
openai.api_base = OPENAI_API_BASE
deployment_name = OPENAI_DEPLOYMENT_NAME

see: https://learn.microsoft.com/en-us/azure/ai-services/openai/whisper-quickstart?tabs=command-line#rest-api

it really just requires a custom openai.api_base, the key (openai.api_key -- already available) as is, a openai.api_type, openaiapi_version, and deployment_name (could be named anything).

You could keep everything the same, and just provide them as override parameters.