WebAssembly example for VAD + Non-streaming ASR (#1284)

wasm/vad-asr/sherpa-onnx-wasm-main-vad-asr.cc

@@ -0,0 +1,19 @@
+// wasm/sherpa-onnx-wasm-main-vad-asr.cc
+//
+// Copyright (c)  2024  Xiaomi Corporation
+#include <stdio.h>
+
+#include <algorithm>
+#include <memory>
+
+#include "sherpa-onnx/c-api/c-api.h"
+
+// see also
+// https://emscripten.org/docs/porting/connecting_cpp_and_javascript/Interacting-with-code.html
+
+extern "C" {
+
+void CopyHeap(const char *src, int32_t num_bytes, char *dst) {
+  std::copy(src, src + num_bytes, dst);
+}
+}