Min chunk size in streaming mode

Hello Cartesia team,

Is it possible to specify chunk size in sse mode in seconds or in frames, for example to do

```python
    response = client.tts.sse(*see_args, min_chnuk_size_ms=500)
    for chunk in response:
        # each chunk length is 500ms
        #do something
```

It will help to use Cartesia in specific cases (for example for large scale batched systems)