Example for streaming-zipformer-* models ?

[[[sherpa-onnx-streaming-zipformer-en-2023-06-26.tar.bz2](https://github.com/k2-fsa/sherpa-onnx/releases/download/asr-models/sherpa-onnx-streaming-zipformer-en-2023-06-26.tar.bz2)](https://github.com/thewh1teagle/sherpa-rs/blob/main/examples/zipformer.rs)] the code is not work for streaming models