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/llama_server/handlers/main.yml

@@ -0,0 +1,13 @@
+---
+- name: Reload systemd daemon
+  become: true
+  ansible.builtin.systemd:
+    daemon_reload: true
+  listen: Reload systemd daemon
+
+- name: Restart llama_exporter
+  become: true
+  ansible.builtin.systemd:
+    name: "{{ llama_server_exporter_service_name }}"
+    state: restarted
+  listen: Restart llama_exporter