debug: fix print stack for wasm

runtime/internal/clite/debug/_wrap/debug_wasm.c

@@ -0,0 +1,31 @@
+#ifdef __EMSCRIPTEN__
+//emscripten
+#include <emscripten.h>
+
+void llgo_print_stack(int skip) {
+  EM_ASM({
+    function getStackTrace() {
+      var stack;
+      try {
+        throw new Error();
+      } catch (e) {
+        stack = e.stack;
+      }
+      return stack;
+    }
+    
+    var stack = getStackTrace();
+    if (stack) {
+      var frames = stack.split('\n').slice($0);
+      frames.forEach(function(frame) {
+        console.log(frame.trim());
+      });
+    }
+  }, skip);
+}
+#else
+// wasi
+void llgo_print_stack(int skip){
+    
+}
+#endif