[Help is wanted] Support decoding wav.scp

[csukuangfj]

We have code for decoding a single file
https://github.com/k2-fsa/sherpa-ncnn/blob/master/python-api-examples/decode-file.py

It is nice to support decoding a list of files, e.g., wav.scp.

A wav.scp is a text file and it looks like the following

utt_id_1 /path/to/foo.wav
utt_id_2 /path/to/bar.wav

The decoding results shall be saved into a text file named text, which has the following format:

utt_id_1 recognition result for this file
utt_id_2 recognition result for this file

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Please post a comment here if you are interested in this issue. We can provide any help we could.