feat: Add ntfy notifier

packages/notification/notification.yaml

@@ -17,6 +17,17 @@ notify:
         data:
           title: Home Assistant
 
+  - name: ntfy
+    platform: rest
+    method: POST_JSON
+    resource: !secret ntfy_url
+    headers:
+      Authorization: !secret ntfy_token
+    title_param_name: title
+    message_param_name: message
+    data:
+      topic: home_assistant
+
   # `notify.security` used for high-priority security reporting including
   # arm/disarm and alarm events. Also used for all camera events and the
   # doorbell function.