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.

ansible/roles/podman/defaults/main.yml

@@ -0,0 +1,15 @@
+---
+# podman defaults
+
+podman_user: ""
+podman_group: ""
+podman_user_home: ""
+podman_extra_groups: []
+podman_user_folders: []
+podman_user_pubkey: ""
+podman_network_name: "none"
+podman_build_files: []
+podman_pods: []
+
+# Binary path - will be set by OS family in tasks
+# podman_binary is set as a fact in tasks/main.yml