feat: Add ListUsers operation

templates/home.html

@@ -2,10 +2,20 @@
 {% block main %}
 <main id="center">
   <img src="/assets/img/logo.png" id="logo">
-	<p style="text-align: center;">You are logged in as {{ username }}</p>
+	<p style="text-align: center;">You are logged in as {{ user.username }}</p>
 	<div id="login-line">
 		<a href="/logout" id="submit-login" value="Logout">Logout</a>
 	</div>
+	{% if other_users %}
+		<div>
+			<h2>Other users you have permission to see</h2>
+			<ul>
+				{% for user in other_users %}
+					<li>{{ user.mail }}</li>
+				{% endfor %}
+			</ul>
+		</div>
+	{% endif %}
 </main>
 {% endblock %}