feat: add prometheus manifest

roles/k3s/tasks/main.yml

@@ -0,0 +1,13 @@
+- name: Download and execute K3s installation script with monitoring metrics enabled
+  shell: |
+    curl -sfL https://get.k3s.io | sh -
+  environment:
+    INSTALL_K3S_EXEC: "--server --write-kubeconfig-mode 644 --kube-controller-manager-arg bind-address=0.0.0.0 --kube-proxy-arg metrics-bind-address=0.0.0.0 --kube-scheduler-arg bind-address=0.0.0.0"
+  args:
+    creates: /usr/local/bin/k3s
+
+- name: Ensure K3s service is started and enabled
+  systemd:
+    name: k3s
+    state: started
+    enabled: yes