feat: Add API info to settings page

This is most useful when using an internal node with a random api key

templates/settings.html

@@ -85,6 +85,12 @@
             <h3>Delete unconfirmed transactions</h3><span>This will only remove pending tx from the wallet older than 20 minutes (~ 2 blocks)</span>
         </div>
     </li>
+    <li class="list-group-item">
+        <div><a class="btn btn-primary stick-right" role="button" href="/settings/api-info">API Info</a>
+            <h3>View API Information</h3><span>View information about the connected HSD node&#39;s API</span>
+        </div>
+    </li>
+
     {% if internal %}
     <li class="list-group-item">
         <div><a class="btn btn-primary stick-right" role="button" href="/settings/restart">Restart Node</a>