feat: add prometheus manifest

roles/prometheus/tasks/main.yml

@@ -0,0 +1,24 @@
+- name: Create monitoring namespace
+  kubernetes.core.k8s:
+    name: monitoring
+    kind: Namespace
+    state: present
+
+- name: Add Prometheus community Helm repository
+  kubernetes.core.helm_repository:
+    name: prometheus-community
+    repo_url: "https://prometheus-community.github.io/helm-charts"
+
+- name: Copy Prometheus customization values
+  template:
+    src: values.yml.j2
+    dest: /tmp/prometheus-values.yml
+
+- name: Deploy kube-prometheus-stack via Helm
+  kubernetes.core.helm:
+    name: kube-prometheus-stack
+    chart_ref: prometheus-community/kube-prometheus-stack
+    release_namespace: monitoring
+    values_files:
+      - /tmp/prometheus-values.yml
+    state: present