[Feature]: Support OpenAI speech-to-text interface v1/audio/[transcriptions,translations]

[mgoin]

🚀 The feature, motivation and pitch

Now that we have support for Whisper (#11280), we should consider implementing OpenAI's explicit speech-to-text API. Documentation is here https://platform.openai.com/docs/guides/speech-to-text

Example of v1/audio/transcriptions

from openai import OpenAI
client = OpenAI()

audio_file= open("/path/to/file/audio.mp3", "rb")
transcription = client.audio.transcriptions.create(
    model="whisper-1", 
    file=audio_file
)

print(transcription.text)

Example of v1/audio/translations

from openai import OpenAI
client = OpenAI()

audio_file = open("/path/to/file/german.mp3", "rb")
transcription = client.audio.translations.create(
    model="whisper-1", 
    file=audio_file,
)

print(transcription.text)

Alternatives

No response

Additional context

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[Temirulan]

I believe this PR is related to this feature request