feat(vaultwarden): add SMTP configuration options and enhance signup settings

- Introduced SMTP settings for Vaultwarden including host, port, security, and authentication details.
- Added variables for signup verification, 2FA settings, password hints, and logging options.
- Updated Vaultwarden deployment to utilize new SMTP configurations.
- Enhanced Grafana module to support dynamic dashboard and datasource provisioning.
- Added LLM proxy configuration for Open Web UI with necessary environment variables.

terraform/apps/prod-01/secrets.tf

@@ -140,3 +140,10 @@ variable "vaultwarden_admin_token" {
   type        = string
   sensitive   = true
 }
+
+variable "vaultwarden_smtp_password" {
+  description = "SMTP password for VaultWarden email"
+  type        = string
+  sensitive   = true
+  default     = ""
+}