* add export of per-token scores (ys, lm, context)
- for best path of the modified-beam-search decoding of transducer
* refactoring JSON export of OnlineRecognitionResult, extending pybind11 API of OnlineRecognitionResult
* export per-token scores also for greedy-search (online-transducer)
- export un-scaled lm_probs (modified-beam search, online-transducer)
- polishing
* fill lm_probs/context_scores only if LM/ContextGraph is present (make Result smaller)
* various fixes to ContextGraph to support open vocabulary keywords decoder
* Add keyword spotter runtime
* Add binary
* First version works
* Minor fixes
* update text2token
* default values
* Add jni for kws
* add kws android project
* Minor fixes
* Remove unused interface
* Minor fixes
* Add workflow
* handle extra info in texts
* Minor fixes
* Add more comments
* Fix ci
* fix cpp style
* Add input box in android demo so that users can specify their keywords
* Fix cpp style
* Fix comments
* Minor fixes
* Minor fixes
* minor fixes
* Minor fixes
* Minor fixes
* Add CI
* Fix code style
* cpplint
* Fix comments
* Fix error
* Support streaming zipformer CTC
* test online zipformer2 CTC
* Update doc of sherpa-onnx.cc
* Add Python APIs for streaming zipformer2 ctc
* Add Python API examples for streaming zipformer2 ctc
* Swift API for streaming zipformer2 CTC
* NodeJS API for streaming zipformer2 CTC
* Kotlin API for streaming zipformer2 CTC
* Golang API for streaming zipformer2 CTC
* C# API for streaming zipformer2 CTC
* Release v1.9.6
* Refactor online recognizer.
Make it easier to support other streaming models.
Note that it is a breaking change for the Python API.
`sherpa_onnx.OnlineRecognizer()` used before should be
replaced by `sherpa_onnx.OnlineRecognizer.from_transducer()`.
* rnnlm model inference supports num_threads setting
* rnnlm params decouple num_thread and provider with Transducer.
* fix python csrc bug which offline-lm-config.cc and online-lm-config.cc arguments problem
* lm_num_threads and lm_provider set default values
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Co-authored-by: cuidongcai1035 <cuidongcai1035@wezhuiyi.com>