Add support for Audio Transcriptions streaming

[batanus]

Is your feature request related to a problem? Please describe. According to new API, Audio Transcriptions now supports Streaming, just like Chat and Create Audio endpoints

Additional context API Reference: https://platform.openai.com/docs/api-reference/audio/createTranscription Docs: https://platform.openai.com/docs/guides/audio#speech-to-text How to: https://platform.openai.com/docs/guides/speech-to-text?lang=curl#streaming-transcriptions