Whisper streaming + VAD configuration (auditok as default instead of silero)

[Jeronymous]

@AudranBert Don't forget to update the README about streaming, comparing what's in kaldi/README.md

For instance websocket part and http with ENABLE_STREAMING needs to be documented in whipser/README.md

[AudranBert]

@AudranBert Don't forget to update the README about streaming, comparing what's in kaldi/README.md

For instance websocket part and http with ENABLE_STREAMING needs to be documented in whipser/README.md

I updated the REAME in this commit

[AudranBert]

• Streaming is working in http and websocket mode
• The VAD has been refactored for decoding and streaming
• Readme updated
• Fixed workers on CPU using a gunicorn hook

Anything left? @Jeronymous

[AudranBert]

Kaldi offline and streaming transcription worked

[AudranBert]

👍