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/templates/gotify-compose.yml.j2

@@ -0,0 +1,44 @@
+services:
+  gotify:
+    image: gotify/server:latest
+    restart: unless-stopped
+    volumes:
+      - gotify_data:/app/data
+    environment:
+      - GOTIFY_DEFAULTUSER_PASS={{ vault_gotify.admin_password }}
+      - TZ=America/Denver
+    labels:
+      glance.name: Gotify
+      glance.icon: si:gotify
+      glance.url: "https://{{ subdomains.gotify }}/"
+      glance.description: Push notification server
+    extra_hosts:
+      - "{{ subdomains.auth }}:{{ docker.hairpin_ip }}"
+      - "{{ subdomains.gotify_assistant }}:{{ docker.hairpin_ip }}"
+
+  igotify-assistant:
+    image: ghcr.io/androidseb25/igotify-notification-assist:latest
+    restart: unless-stopped
+    volumes:
+      - igotify_data:/app/data
+    environment:
+      - TZ=America/Denver
+    depends_on:
+      - gotify
+    labels:
+      glance.name: iGotify Assistant
+      glance.icon: si:apple
+      glance.url: "https://{{ subdomains.gotify_assistant }}/"
+      glance.description: iOS notification assistant
+    extra_hosts:
+      - "{{ subdomains.auth }}:{{ docker.hairpin_ip }}"
+      - "{{ subdomains.gotify }}:{{ docker.hairpin_ip }}"
+
+volumes:
+  gotify_data:
+  igotify_data:
+
+networks:
+  default:
+    external: true
+    name: "{{ docker.network_name }}"