Add config for XMPP notifications from-address

app/models/setting.rb

@@ -29,6 +29,7 @@ class Setting < RailsSettings::Base
 
   field :xmpp_default_rooms, type: :array, default: []
   field :xmpp_autojoin_default_rooms, type: :boolean, default: false
+  field :xmpp_notifications_from_address, type: :string, default: primary_domain
 
   #
   # Sentry

app/views/admin/settings/services/_ejabberd.html.erb

@@ -45,5 +45,16 @@
       value: Setting.ejabberd_buddy_roster,
       class: "w-full" %>
   <% end %>
+</ul>
+<h3 class="mt-10">Notifications</h3>
+<ul role="list">
+  <%= render FormElements::FieldsetComponent.new(
+        title: "From address",
+        description: "Address (JID) of the account notifications are sent from",
+      ) do %>
+    <%= f.text_field :xmpp_notifications_from_address,
+      value: Setting.xmpp_notifications_from_address,
+      class: "w-full" %>
+  <% end %>
 <% end %>
 </ul>