添加二维码转换包

package.json

@@ -57,6 +57,7 @@
     "vue-count-to": "1.0.13",
     "vue-cropper": "0.5.5",
     "vue-meta": "2.4.0",
+    "vue-qr": "^4.0.9",
     "vue-quill-editor": "^3.0.6",
     "vue-router": "3.4.9",
     "vuedraggable": "^2.24.3",