feat: add Gotify notification server with iGotify iOS support

Add comprehensive push notification infrastructure with:
- Gotify server for push notifications with admin password configuration
- iGotify Assistant service for iOS notification relay via Apple Push Notifications
- Dual subdomain setup (gotify.* and gotify-assistant.*)
- Proper service dependencies and container communication via hairpinning
- Caddy reverse proxy configuration for both services
- DNS A records for both subdomains
- Added to monitoring services category
- Tested with successful notification delivery

Services accessible at:
- https://gotify.thesatelliteoflove.com (main server)
- https://gotify-assistant.thesatelliteoflove.com (iOS assistant)

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

roles/docker/files/Caddyfile

@@ -83,6 +83,14 @@ home.thesatelliteoflove.com {
     reverse_proxy authentik-server-1:9000
 }
 
+gotify.thesatelliteoflove.com {
+    reverse_proxy gotify-gotify-1:80
+}
+
+gotify-assistant.thesatelliteoflove.com {
+    reverse_proxy gotify-igotify-assistant-1:8080
+}
+
 
 repair.nerder.land {
     root * /srv/repair