Add Nextcloud deployment and configuration

- Introduced Nextcloud module with Kubernetes resources including deployment, service, ingress, and cron job.
- Configured Apache settings for Nextcloud with SSL support and compression.
- Created secrets for mail and admin credentials.
- Added necessary environment variables for Nextcloud configuration.
- Removed unused Scaleway access and secret keys from secrets and variables.
- Updated CoreDNS module to support custom host overrides.
- Implemented backup bucket policies and lifecycle rules for Scaleway object storage.
- Enhanced IAM policies and applications for backup and email services.
- Added outputs for backup bucket and API keys.

terraform/modules/db/mariadb/outputs.tf

@@ -13,3 +13,7 @@ output "root_crendentials_name" {
 output "app_crendentials_name" {
   value = kubernetes_secret.app_password.metadata[0].name
 }
+
+output "db_name" {
+  value = var.app_name
+}