feat(mail): enhance mail configuration with getmail and dovecot settings

- Added getmail configuration generation using template files.
- Introduced postfix and dovecot configuration checksums for deployment.
- Created new dovecot configuration file and sieve script for email handling.
- Updated main.tf to utilize local variables for configuration management.
- Removed redundant external password hasher from main.tf.

feat(nginx): improve nginx configuration management

- Centralized nginx configuration into a local variable with checksum.
- Created separate config maps for default website configurations.
- Updated deployment to utilize new configuration structure.

feat(sftpgo): add SFTPGo application deployment

- Introduced SFTPGo with Kubernetes resources including namespace, config maps, and secrets.
- Configured SFTPGo with SMTP settings and AWS credentials.
- Implemented health checks and volume mounts for persistent storage.

refactor(seafile): remove Seafile module

- Deleted Seafile module and associated resources as part of cleanup.

terraform/modules/apps/gitea/database.tf

@@ -0,0 +1,15 @@
+module "gitea_database" {
+  source = "../../db/mariadb"
+
+  namespace = kubernetes_namespace.gitea.metadata[0].name
+  app_name  = "gitea"
+
+  app_password  = var.db_password
+  root_password = var.db_root_password
+
+  retention_days = var.backup_retention_days
+  cron_schedule  = var.backup_cron_schedule
+
+  database_folder = local.gitea_db_path
+  backup_folder   = var.backup_folder
+}