Add Rust example for real-time ASR + VAD (#3397)

This pull request expands the Rust API examples by introducing a comprehensive set of simulated real-time ASR applications integrated with VAD. These additions allow users to interact with various ASR models directly through their microphone, providing a practical demonstration of the sherpa-onnx library's capabilities in a live audio processing context. The changes also include necessary infrastructure for audio resampling and improved output display.

rust-api-examples/run-zipformer-ja-reazonspeech-simulate-streaming-microphone.sh

@@ -0,0 +1,24 @@
+#!/usr/bin/env bash
+set -ex
+
+# https://k2-fsa.github.io/sherpa/onnx/vad/silero-vad.html
+if [ ! -f "./silero_vad.onnx" ]; then
+  curl -SL -O https://github.com/k2-fsa/sherpa-onnx/releases/download/asr-models/silero_vad.onnx
+fi
+
+# see
+# https://k2-fsa.github.io/sherpa/onnx/pretrained_models/offline-transducer/zipformer-transducer-models.html#sherpa-onnx-zipformer-ja-reazonspeech-2024-08-01-japanese
+if [ ! -f ./sherpa-onnx-zipformer-ja-reazonspeech-2024-08-01/encoder-epoch-99-avg-1.int8.onnx ]; then
+  curl -SsL -O https://github.com/k2-fsa/sherpa-onnx/releases/download/asr-models/sherpa-onnx-zipformer-ja-reazonspeech-2024-08-01.tar.bz2
+
+  tar xvf sherpa-onnx-zipformer-ja-reazonspeech-2024-08-01.tar.bz2
+  rm sherpa-onnx-zipformer-ja-reazonspeech-2024-08-01.tar.bz2
+  ls -lh sherpa-onnx-zipformer-ja-reazonspeech-2024-08-01
+fi
+
+cargo run --example zipformer_transducer_simulate_streaming_microphone --features mic -- \
+    --silero-vad-model ./silero_vad.onnx \
+    --encoder ./sherpa-onnx-zipformer-ja-reazonspeech-2024-08-01/encoder-epoch-99-avg-1.int8.onnx \
+    --decoder ./sherpa-onnx-zipformer-ja-reazonspeech-2024-08-01/decoder-epoch-99-avg-1.onnx \
+    --joiner ./sherpa-onnx-zipformer-ja-reazonspeech-2024-08-01/joiner-epoch-99-avg-1.int8.onnx \
+    --tokens ./sherpa-onnx-zipformer-ja-reazonspeech-2024-08-01/tokens.txt