feat: enhance Ansible playbook and Nginx configuration with authentication and logrotate setup

- Added environment variables for project configuration in env.template.
- Updated Ansible playbook to use environment variables for project settings and added tasks for monitoring authentication setup.
- Enhanced Nginx configuration for Alertmanager and Prometheus with HTTP Basic Authentication.
- Introduced logrotate configuration for managing log files and set up cron for daily execution.
- Removed obsolete Uptime Kuma docker-compose file.

infra/nginx/conf.d/prometheus.conf

@@ -1,7 +1,14 @@
-# Prometheus proxy configuration
+# Prometheus proxy configuration with authentication
 location /prometheus/ {
-    proxy_pass http://prometheus_backend/;
-    proxy_redirect / /prometheus/;
+    # HTTP Basic Authentication
+    auth_basic "Prometheus Monitoring";
+    auth_basic_user_file /etc/nginx/passwords/monitoring.htpasswd;
+    
+    # Rate limiting
+    limit_req zone=api burst=10 nodelay;
+    
+    proxy_pass http://prometheus_backend/prometheus/;
+    proxy_redirect /prometheus/ /prometheus/;
     proxy_set_header Host $host;
     proxy_set_header X-Real-IP $remote_addr;
     proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
@@ -23,7 +30,7 @@ location /prometheus/ {
 
 # Health check endpoint
 location /prometheus/-/healthy {
-    proxy_pass http://prometheus_backend/-/healthy;
+    proxy_pass http://prometheus_backend/prometheus/-/healthy;
     proxy_set_header Host $host;
     access_log off;
 }