preparing item service for use in document service

frontend/src/routes/document/ItemList.svelte

@@ -1,7 +1,26 @@
 <script>
+    import { t } from '../../translations.svelte.js';
+    import { onMount } from 'svelte';
+
+    let items = $state(null);
+    let error = $state(null);
+    async function loadItems(){
+        const url = `${location.protocol}//${location.host.replace('5173','8080')}/api/items/list`;
+        const resp = await fetch(url,{credentials:'include'});
+        if (resp.ok){
+            items = await resp.json();
+        } else {
+            error = await resp.body();
+        }
+    }
+
+    onMount(loadItems);
 
 </script>
 
 <div>
     <h1>Items</h1>
+    {#if error}
+    <span class="error">{error}</span>
+    {/if}
 </div>