xuning / sherpaonnx

* 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)

Fix java tests.

Make it easier to build WebAssembly for ASR.

Co-authored-by: vsd-vector <askars.salimbajevs@tilde.lv>

It does not need to use git lfs any longer.

See also https://github.com/k2-fsa/icefall/pull/1466

wget is not available on Windows in GitHub actions

Fix #547

- Avoid output like : `[' K', '<0x64>', '<0x79>', 'ť', ' a', '<0x75>',
  'to', 'bu', '<0x73>', '<0x75>', ... ]` with regular 500 BPE units.
- Don't rewrite 1-char tokens in range [ 0x20 (space) .. 0x7E (tilde) ]