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/vars/main.yml

@@ -0,0 +1,23 @@
+---
+# Internal role variables (non-overridable)
+
+# Container names
+gpu_monitoring_prometheus_container_name: "prometheus"
+
+# Derived paths
+nvidia_exporter_script_path: "{{ nvidia_exporter_install_dir }}/nvidia_gpu_exporter.py"
+nvidia_exporter_venv_bin: "{{ nvidia_exporter_venv_path }}/bin"
+nvidia_exporter_service_name: "nvidia_exporter"
+
+amd_exporter_script_path: "{{ amd_exporter_install_dir }}/amd_gpu_exporter.py"
+amd_exporter_venv_bin: "{{ amd_exporter_venv_path }}/bin"
+amd_exporter_service_name: "amdgpu_exporter"
+
+llama_exporter_script_path: "{{ llama_exporter_install_dir }}/llama_exporter.py"
+llama_exporter_venv_bin: "{{ llama_exporter_venv_path }}/bin"
+llama_exporter_service_name: "llama_exporter"
+
+# Default llama.cpp targets if none provided
+llama_exporter_targets_default:
+  - name: "llama-cpp-8012"
+    url: "http://localhost:8012"