simple display for id mappings in frontend

web/index.html

@@ -23,6 +23,18 @@
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   </a>
   </div>
+  <div class="pt-6">
+    <h2 class="ID" >ID mapping</h2>
+
+    <table id="mappingTable">
+      <tr>
+        <th>ID</th>
+        <th>Nachname</th>
+        <th>Vorname</th>
+      </tr>
+
+    </table>
+  </div>
 </body>
 
 </html>