feat(openai): add OpenAI STT provider with gpt-4o-transcribe support#13

prlanzarin merged 2 commits intobigbluebutton:stt/refactor/generic-providersbigbluebutton/bbb-livekit-stt:stt/refactor/generic-providersfrom

nathanael-h:generic-providers-openainathanael-h/bbb-livekit-stt:generic-providers-openaiCopy head branch name to clipboard