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/iac/scaleway/config.tf

@@ -3,6 +3,8 @@ locals {
     "${local.vps_1.ip}/32",
   ]
 
+  cloud_backup_retention_days = 3
+
   vps_1 = {
     id   = data.terraform_remote_state.contabo.outputs.instances[0].id
     name = data.terraform_remote_state.contabo.outputs.instances[0].name
@@ -19,3 +21,7 @@ data "terraform_remote_state" "contabo" {
   }
 }
 
+data "scaleway_account_project" "default" {
+  project_id      = var.scaleway_project_id
+  organization_id = var.scaleway_organization_id
+}