refactored item module → stock, added legacy database creation methods

Signed-off-by: Stephan Richter <s.richter@srsoftware.de>

frontend/src/routes/stock/Locations.svelte

@@ -1,8 +1,15 @@
 <script>
+    import { t } from '../../translations.svelte';
+
     let { locations } = $props();
 </script>
 
 <ul>
+    <li>
+        <a>
+            <span class="symbol"></span> {t('add_object',{object:'location'})}
+        </a>
+    </li>
     {#each Object.entries(locations) as [k,v]}
     <li>
         {k}