Implement streaming transcription using OpenAI API

[devsteppe9]

Feature Request

Integrate the streaming transcription feature from the OpenAI API, as described in OpenAI's Speech-to-Text Guide.

Requirements

• Replace or extend the current transcription system to support real-time (streaming) transcription using OpenAI's API.
• Ensure the implementation handles audio chunks efficiently and displays transcribed text to the user as it streams.
• Provide feedback to the user on the transcription state (e.g., listening, transcribing, complete).
• Ensure error handling for connectivity or API-related issues, with appropriate user feedback.

References

• OpenAI Speech-to-Text Documentation

Notes

• The solution should be tested within the context of the existing Flutter & Rive app.
• Consider performance and latency for best user experience.