wip! [vue3] Readd vuedraggable

Use next for vue3: https://github.com/SortableJS/vue.draggable.next

Author: chme

web-src/package-lock.json

@@ -15,6 +15,7 @@
     "vue": "^3.2.25",
     "vue-range-slider": "^0.6.0",
     "vue-router": "^4.0.12",
+    "vuedraggable": "^4.1.0",
     "vuex": "^4.0.2"
   },
   "devDependencies": {