Add current state of the Vue frontend

vue/src/views/Customers.vue

@@ -0,0 +1,29 @@
+<template>
+    <div>
+        <div v-if="error">{{ error }}</div>
+        <EntityList :columns="['id', 'number', 'prefix']" link-column="id" :entities="customers" />
+    </div>
+</template>
+
+<script>
+    import HSAdmin from "../hsadmin";
+    import EntityList from "../components/EntityList";
+
+    export default {
+        name: "Customers",
+        components: {EntityList},
+        data () { return {
+            error: false,
+            customers: [],
+        }},
+        props: { hsadmin: HSAdmin },
+        created () { this.fetch() },
+        watch: { "$route": "fetch" },
+        methods: {
+            async fetch () {
+                const res = await this.hsadmin.get("customers");
+                this.customers = res.data;
+            }
+        },
+    }
+</script>