Add Dart API for Moonshine models. (#1481)

dart-api-examples/vad-with-non-streaming-asr/run-moonshine.sh

@@ -0,0 +1,29 @@
+#!/usr/bin/env bash
+
+set -ex
+
+dart pub get
+
+if [ ! -f ./sherpa-onnx-moonshine-tiny-en-int8/tokens.txt ]; then
+  curl -SL -O https://github.com/k2-fsa/sherpa-onnx/releases/download/asr-models/sherpa-onnx-moonshine-tiny-en-int8.tar.bz2
+  tar xvf sherpa-onnx-moonshine-tiny-en-int8.tar.bz2
+  rm sherpa-onnx-moonshine-tiny-en-int8.tar.bz2
+fi
+
+if [ ! -f ./Obama.wav ]; then
+  curl -SL -O https://github.com/k2-fsa/sherpa-onnx/releases/download/asr-models/Obama.wav
+fi
+
+if [[ ! -f ./silero_vad.onnx ]]; then
+  curl -SL -O https://github.com/k2-fsa/sherpa-onnx/releases/download/asr-models/silero_vad.onnx
+fi
+
+dart run \
+  ./bin/moonshine.dart \
+  --silero-vad ./silero_vad.onnx \
+  --preprocessor ./sherpa-onnx-moonshine-tiny-en-int8/preprocess.onnx \
+  --encoder ./sherpa-onnx-moonshine-tiny-en-int8/encode.int8.onnx \
+  --uncached-decoder ./sherpa-onnx-moonshine-tiny-en-int8/uncached_decode.int8.onnx \
+  --cached-decoder ./sherpa-onnx-moonshine-tiny-en-int8/cached_decode.int8.onnx \
+  --tokens ./sherpa-onnx-moonshine-tiny-en-int8/tokens.txt \
+  --input-wav ./Obama.wav