address form: add the possibility to create a new address

src/Bundle/ChillMainBundle/Resources/public/vuejs/_components/AddAddress/AddressSelection.vue

@@ -7,7 +7,11 @@
          track-by="id"
          label="value"
          :custom-label="transName"
+         :taggable="true"
+         :multiple="false"
+         @tag="addAddress"
          :placeholder="$t('select_address')"
+         :tagPlaceholder="$t('create_address')"
          :options="addresses">
       </VueMultiselect>
    </div>
@@ -25,18 +29,25 @@ export default {
          value: null
       }
    },
+   computed: {
+      addresses() {
+         return this.address.loaded.addresses;
+      }
+   },
    methods: {
       transName(value) {
-         return `${value.street}, ${value.streetNumber}`
+         return value.streetNumber === undefined ? value.street : `${value.street}, ${value.streetNumber}`
       },
       selectAddress(value) {
          this.address.selected.address = value;
          this.updateMapCenter(value.point);
       },
-   },
-   computed: {
-      addresses() {
-         return this.address.loaded.addresses;
+      addAddress (newAddress) {
+         const address = {
+            street: newAddress
+         };
+         this.value = address;
+         this.address.selected.address = address;
       }
    }
 };