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/alertmanager.conf

@@ -1,8 +1,12 @@
 # Alertmanager Nginx Configuration
 # Proxies requests to Alertmanager
 
-# Alertmanager location
+# Alertmanager location with authentication
 location /alerts/ {
+    # HTTP Basic Authentication
+    auth_basic "Alertmanager Monitoring";
+    auth_basic_user_file /etc/nginx/passwords/monitoring.htpasswd;
+    
     # Rate limiting
     limit_req zone=api burst=10 nodelay;
     
@@ -31,8 +35,12 @@ location /alerts/ {
     add_header X-Content-Type-Options "nosniff" always;
 }
 
-# Alertmanager API
+# Alertmanager API with authentication
 location /api/v1/ {
+    # HTTP Basic Authentication
+    auth_basic "Alertmanager API";
+    auth_basic_user_file /etc/nginx/passwords/monitoring.htpasswd;
+    
     # Rate limiting
     limit_req zone=api burst=20 nodelay;