At least on my macOS Sequoia system (MBP 14" 2021, M1 Pro), when I run
the `whisper-microphone` example after it has gathered 10 seconds of
audio, it fails before the transcription:
```
Error: Insufficient buffer size 384 for input channel 0, expected 1024
```
At least for the audio device I'm using (Airpods Pro Max), there is no
guarantee that each audio buffer is a multiple of 1024 samples. Thus at
the end of the 10 seconds, `buffered_pcm` can have some samples at the
end that do not form a complete 1024 sample chunk.
This fixes that by tracking when there is a partial chunk at the end of
the buffer, and leaving it in `buffered_pcm` to be processed on the next
loop iteration.
Note that, in the interest of keeping this PR as small as possible, I
didn't make any other changes to this example.
* feat: support microphone whisper streaming
* fix: cleanup print stmts and adjust how input is read
* fix: remove incorrect comment
* feat: split into new example and simplify
* fix: feature flag example file
* fix: fmt fixes
* feat: simplify and remove redundant files
