Support audio tagging using zipformer (#747)

.github/scripts/test-audio-tagging.sh

@@ -0,0 +1,32 @@
+#!/usr/bin/env bash
+
+set -ex
+
+log() {
+  # This function is from espnet
+  local fname=${BASH_SOURCE[1]##*/}
+  echo -e "$(date '+%Y-%m-%d %H:%M:%S') (${fname}:${BASH_LINENO[0]}:${FUNCNAME[1]}) $*"
+}
+
+echo "EXE is $EXE"
+echo "PATH: $PATH"
+
+which $EXE
+
+log "------------------------------------------------------------"
+log "Run zipformer for audio tagging                             "
+log "------------------------------------------------------------"
+
+curl -SL -O https://github.com/k2-fsa/sherpa-onnx/releases/download/audio-tagging-models/sherpa-onnx-zipformer-audio-tagging-2024-04-09.tar.bz2
+tar xvf sherpa-onnx-zipformer-audio-tagging-2024-04-09.tar.bz2
+rm sherpa-onnx-zipformer-audio-tagging-2024-04-09.tar.bz2
+repo=sherpa-onnx-zipformer-audio-tagging-2024-04-09
+ls -lh $repo
+
+for w in 1.wav 2.wav 3.wav 4.wav; do
+  $EXE \
+    --zipformer-model=$repo/model.onnx \
+    --labels=$repo/class_labels_indices.csv \
+    $repo/test_wavs/$w
+done
+rm -rf $repo