chore(web): tag creation hint (#12142)

* chore(web): tag creation hint

* use FormatMessage

* use correct format

* use correct css class

* copywriting

web/src/lib/components/forms/tag-asset-form.svelte

@@ -7,6 +7,8 @@
   import { onMount } from 'svelte';
   import { getAllTags, type TagResponseDto } from '@immich/sdk';
   import Icon from '$lib/components/elements/icon.svelte';
+  import { AppRoute } from '$lib/constants';
+  import FormatMessage from '$lib/components/i18n/format-message.svelte';
 
   export let onTag: (tagIds: string[]) => void;
   export let onCancel: () => void;
@@ -38,6 +40,15 @@
 </script>
 
 <FullScreenModal title={$t('tag_assets')} icon={mdiTag} onClose={onCancel}>
+  <div class="text-sm">
+    <p>
+      <FormatMessage key="tag_not_found_question" let:message>
+        <a href={AppRoute.TAGS} class="text-immich-primary dark:text-immich-dark-primary underline">
+          {message}
+        </a>
+      </FormatMessage>
+    </p>
+  </div>
   <form on:submit|preventDefault={handleSubmit} autocomplete="off" id="create-tag-form">
     <div class="my-4 flex flex-col gap-2">
       <Combobox