Add GPU monitoring services and configurations

- Create systemd service templates for llama_exporter, nvidia_exporter, and podman.
- Add Prometheus configuration template for GPU metrics scraping.
- Introduce variables for GPU monitoring role in main.yml.
- Implement tasks for syncing llama models, including user setup and package installation.
- Update podman tasks to ensure proper sudo access and lingering for the podman user.
- Modify inventory to include gpu_monitoring group.
- Add Terraform modules for deploying Vaultwarden, including ingress and service configurations.
- Create Grafana dashboard for real-time GPU monitoring metrics.
- Update secrets and environment files to include Vaultwarden admin token.

ansible/roles/gpu_monitoring/templates/podman.service.j2

@@ -0,0 +1,17 @@
+[Unit]
+Description=Podman service for {{ item.name }}
+After=local-fs.target network-online.target
+
+[Service]
+Type=oneshot
+User={{ prometheus_user }}
+Group={{ prometheus_group }}
+RemainAfterExit=true
+ExecStart={{ podman_binary | default('/usr/bin/podman') }} start {{ item.name }}
+ExecStop={{ podman_binary | default('/usr/bin/podman') }} stop {{ item.name }}
+
+StandardOutput=journal
+StandardError=journal
+
+[Install]
+WantedBy=multi-user.target