feat: add result output

__wasm/deno_rust_wasm_qr_decode/index.htm

@@ -6,6 +6,7 @@
         <div style="border: dashed 2px;border-color:gray;height:50px;padding:20px 10px;margin:10px;" id="sfile">
             Drop file(s) here
         </div>
+        <div style="border: dashed 1px;border-color:gray;padding:5px 10px;margin:10px;color:green;"><pre id="result"></pre></div>
         <script type="module" src="index.js"></script>
     </body>
 </html>

__wasm/deno_rust_wasm_qr_decode/index.js

@@ -33,8 +33,9 @@ function handleFileSelect(evt) {
             // debugger;
             console.log(typeof bs);
             console.log(bs);
-            let qr_result = decode_qr(bs);
+            let qr_result = decode_qr(new Uint8Array(bs));
             console.log(qr_result);
+            document.getElementById('result').innerText = JSON.stringify(JSON.parse(qr_result), null, 4);
         }
       };
       var blob = f.slice(0, f.size);