implemented /bookmark/<ID>/view

frontend/src/routes/bookmark/View.svelte

@@ -0,0 +1,32 @@
+<script>
+    import { onMount } from 'svelte';
+
+    import Bookmark from './Template.svelte';
+
+    import { api }     from '../../urls.svelte.js';
+    import { t }       from '../../translations.svelte.js';
+
+    import Editor      from '../../Components/MarkdownEditor.svelte';
+    import Template        from './Template.svelte';
+
+    let bookmark = $state(null);
+    let error = $state(null);
+    let { id } = $props();
+
+    async function load(){
+        const url  = api(`bookmark/${id}`);
+        const resp = await fetch(url,{credentials:'include'});
+        if (resp.ok){
+            bookmark = await resp.json();
+        } else {
+            error = await resp.text();
+        }
+    }
+
+    onMount(load);
+</script>
+
+{#if error}
+<span class="error">{error}</span>
+{/if}
+<Template {bookmark} />