feat: integrate Uptime Kuma and Alertmanager into Docker setup

- Add Uptime Kuma service for status monitoring with health checks.
- Introduce Alertmanager service for alert management and notifications.
- Update docker-compose.yml to include new services and their configurations.
- Enhance Makefile with commands for managing Uptime Kuma and Alertmanager logs.
- Modify Ansible playbook to install necessary packages and configure SSL for new services.
- Update Nginx configuration to route traffic to Uptime Kuma and Alertmanager.
- Adjust Prometheus configuration to include alert rules and external URLs.

infra/alertmanager/alertmanager-simple.yml

@@ -0,0 +1,17 @@
+# Simplified Alertmanager Configuration
+global:
+  smtp_smarthost: 'localhost:587'
+  smtp_from: 'alerts@localhost'
+
+route:
+  group_by: ['alertname']
+  group_wait: 10s
+  group_interval: 10s
+  repeat_interval: 1h
+  receiver: 'web.hook'
+
+receivers:
+  - name: 'web.hook'
+    webhook_configs:
+      - url: 'http://localhost:5001/'
+        send_resolved: true