feat: start Atom feed implementation

templates/rss/event_entry.html.twig

@@ -0,0 +1,8 @@
+<p>
+    A new event has been recorded for this domain:
+</p>
+
+<ul>
+    <li><strong>Action:</strong> {{ event.action }}</li>
+    <li><strong>Date:</strong> {{ event.date|date('Y-m-d H:i:s') }}</li>
+</ul>

templates/rss/status_entry.html.twig

@@ -0,0 +1,23 @@
+<p>
+    The EPP status of this domain name has changed:
+</p>
+
+{% if domainStatus.addStatus is not empty %}
+    <p><strong>Added statuses:</strong></p>
+    <ul>
+        {% for status in domainStatus.addStatus %}
+            <li>{{ status }}</li>
+        {% endfor %}
+    </ul>
+{% endif %}
+
+{% if domainStatus.deleteStatus is not empty %}
+    <p><strong>Deleted statuses:</strong></p>
+    <ul>
+        {% for status in domainStatus.deleteStatus %}
+            <li>{{ status }}</li>
+        {% endfor %}
+    </ul>
+{% endif %}
+
+<p><strong>Change date:</strong> {{ domainStatus.date|date('Y-m-d H:i:s') }}</p>