add display of app version in UI

app/views/shared/_settings_nav.html.erb

@@ -116,6 +116,11 @@
       <a href="mailto:<%= Docuseal::SUPPORT_EMAIL %>" target="_blank" class="w-full block mt-4 underline text-center">
         <%= Docuseal::SUPPORT_EMAIL %>
       </a>
+      <% if Docuseal.version.present? %>
+        <a href="https://github.com/docusealco/docuseal/releases/tag/<%= Docuseal.version %>" target="_blank" class="badge badge-outline text-xs block mx-auto mt-4">
+          v<%= Docuseal.version %>
+        </a>
+      <% end %>
     </div>
   <% end %>
 </div>