Refactor Gitea and SSH configurations, update backup scripts, and enhance Nginx settings

- Updated SSH configuration for Gitea to disable banner and TTY, and modified the AuthorizedKeysCommand.
- Simplified gitea-shell script to directly call the k8s_gitea_shell command with required parameters.
- Removed unused gitea-auth script from playbook_gitea.yml.
- Updated systools_version in playbook_systools.yml to 0.4.5.
- Enhanced ssh_locker_helper to copy redirect URL to clipboard based on OS.
- Added a new script test_imaps for IMAP testing.
- Updated Terraform configurations for various applications, including:
  - Added a backup script for MariaDB with retention policy.
  - Changed Gitea version to 1.24-rootless and adjusted SSH settings.
  - Updated Nginx configurations to log errors and access to stderr/stdout.
  - Refactored services to use ClusterIP type and adjusted security contexts for deployments.
  - Added temporary storage for applications using empty_dir.
  - Enhanced backup.sh scripts for better error handling and logging.

terraform/apps/prod-01/resources/alexpires.me.conf

@@ -1,15 +1,5 @@
 resolver kube-dns.kube-system.svc.cluster.local valid=10s;
 
-location ^~ /config/dav {
-    proxy_pass https://web.sftpgo.svc.cluster.local/config/dav;
-    proxy_set_header Host $host;
-    proxy_set_header X-Real-IP $remote_addr;
-    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-    proxy_set_header X-Forwarded-Proto $scheme;
-    proxy_set_header X-Forwarded-Host $host;
-    proxy_set_header X-Forwarded-Port $server_port;
-}
-
 location ^~ /api/ssh_locker/ {
     rewrite ^/api/ssh_locker/(.*)$ /$1 break;
     proxy_pass https://backend.ssh-locker-web.svc.cluster.local;