Add Vue debounce plugin

lib/www/client/source/src/main.js

@@ -3,9 +3,12 @@ import App from './App.vue'
 import router from './router'
 import store from './store'
 import vuetify from './plugins/vuetify'
+import vueDebounce from 'vue-debounce'
 
 Vue.config.productionTip = false
 
+Vue.use(vueDebounce);
+
 new Vue({
   data () {
     return {