Fixes#199 - Object of type dtype is not JSON serializable
When loading models with torch_dtype as a torch.dtype object (e.g.,
torch.bfloat16), transformers would fail to serialize the config to
JSON for logging purposes, raising TypeError.
This fix:
- Adds _convert_dtype_to_string() helper function to convert torch.dtype
objects to their string representation (e.g., 'bfloat16')
- Overrides to_dict() method in VibeVoiceConfig, VibeVoiceASRConfig,
and VibeVoiceStreamingConfig to apply this conversion
The fix is backward compatible - string dtype values and None values
continue to work as expected.
ThanhNguyxn