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/modules/apps/grafana/variables.tf

@@ -21,8 +21,13 @@ variable "persistent_folder" {
   type        = string
 }
 
-variable "prometheus_url" {
-  description = "Prometheus service URL used by Grafana datasource provisioning"
-  type        = string
-  default     = "http://prometheus.prometheus.svc.cluster.local:9090"
+variable "dashboard_folder" {
+  description = "Map of Grafana folder name => local folder path containing dashboard JSON files. Each entry becomes a Grafana provider/category and loads all .json files from its path."
+  type        = map(string)
+  default     = {}
+}
+
+variable "datasource_folder" {
+  description = "Path to a folder containing Grafana datasource provisioning YAML files. When set, all .yml/.yaml files in this folder will be loaded and have __PROMETHEUS_URL__ replaced with the actual prometheus_url. If not set, falls back to the default single-prometheus datasource."
+  type        = string
 }