Neon STT Support

[NeonDaniel]

Needs further investigation, but Neon STT base class implementation can be found at: https://github.com/NeonGeckoCom/neon_speech/blob/master/neon_speech/stt.py

Main functionality/patches to implement:

• shared config for "google_cloud"-based plugins (could be handled outside of this base class)
• optional metric reporting (could make metrics handling a plugin or messagebus event to be handled
• results_event Event that is set when streaming STT engine returns something

[NeonDaniel]

I think accepting args/kwargs in the base class here may be sufficient in this package; the core module loading plugins can then handle any extra params

[NeonDaniel]

NeonGeckoCom/neon_speech#98