Browser Silero VAD assets

@ricky0123/vad-web 0.0.29
https://github.com/ricky0123/vad
License: ISC

Silero VAD model
https://github.com/snakers4/silero-vad
License: MIT

ONNX Runtime Web 1.22.0
https://github.com/microsoft/onnxruntime
License: MIT

These files are bundled locally so the Chrome extension does not execute
remotely hosted code.
