feat: STT/TTS Deepgram

[berry-13]

WIP

Change Type

• [x] New feature (non-breaking change which adds functionality)

Checklist

• [ ] My code adheres to this project's style guidelines
• [ ] I have performed a self-review of my own code
• [ ] I have commented in any complex areas of my code
• [ ] I have made pertinent documentation changes
• [ ] My changes do not introduce new warnings
• [ ] I have written tests demonstrating that my changes are effective or that my feature works
• [ ] Local unit tests pass with my changes
• [ ] Any changes dependent on mine have been merged and published in downstream modules.
• [ ] A pull request for updating the documentation has been submitted.