Added Kubernetes metrics server

As an interim solution I configured it insecurely, not verifying TLS certificates.

argocd/namespaces/kube-system/applications/metrics-server.yaml

@@ -0,0 +1,26 @@
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: metrics-server
+  namespace: argocd
+  annotations:
+    argocd.argoproj.io/sync-wave: "-800"
+  finalizers:
+  - resources-finalizer.argocd.argoproj.io
+spec:
+  project: default
+  syncPolicy:
+    automated:
+      prune: true
+      selfHeal: true
+  destination:
+    namespace: kube-system
+    server: https://kubernetes.default.svc
+  source:
+    chart: metrics-server
+    repoURL: https://kubernetes-sigs.github.io/metrics-server/
+    targetRevision: 3.13.0
+    helm:
+      valuesObject:
+        args:
+          - "--kubelet-insecure-tls"