Add storage-metrics-server feature

Signed-off-by: Tamal Saha <tamal@appscode.com>

Author: tamalsaha

charts/opscenter-features/README.md

@@ -116,6 +116,7 @@ The following table lists the configurable parameters of the `opscenter-features
 | helm.releases.license-proxyserver.version                               |                                 | <code>"v2026.2.16"</code>                  |
 | helm.releases.longhorn.version                                          |                                 | <code>"1.7.2"</code>                       |
 | helm.releases.metrics-server.version                                    |                                 | <code>"3.11.0"</code>                      |
+| helm.releases.storage-metrics-server.version                            |                                 | <code>"v2026.7.8"</code>                   |
 | helm.releases.monitoring-operator.version                               |                                 | <code>"v2026.6.12"</code>                  |
 | helm.releases.operator-shard-manager.version                            |                                 | <code>"v2026.6.22"</code>                  |
 | helm.releases.opencost.version                                          |                                 | <code>"1.18.1"</code>                      |

charts/opscenter-features/templates/featuresets/opscenter-observability/monitoring/storage-metrics-server.yaml

@@ -0,0 +1,44 @@
+{{ $defaults := dict "registryFQDN" (include "registry.ghcr" $) }}
+
+{{ $vals := dig "storage-metrics-server" "values" (dict) .Values.helm.releases }}
+{{ $vals = mergeOverwrite $defaults $vals }}
+
+{{- if eq (include "distro.openshift" $) "true" }}
+{{ $vals = mergeOverwrite $vals (dict "distro" .Values.distro) }}
+{{- end }}
+
+apiVersion: ui.k8s.appscode.com/v1alpha1
+kind: Feature
+metadata:
+  name: storage-metrics-server
+  labels:
+    app.kubernetes.io/part-of: opscenter-observability
+spec:
+  title: Kubernetes Metrics Server
+  description: |
+    Container resource metrics for Kubernetes built-in autoscaling pipelines.
+  icons:
+  - src: https://cdn.appscode.com/k8s/icons/menu/cluster.svg
+    type: image/svg+xml
+  featureSet: opscenter-observability
+  featureBlock: metrics-server
+  recommended: false
+  readinessChecks:
+    workloads:
+      - group: apps
+        version: v1
+        kind: Deployment
+        selector:
+          app.kubernetes.io/name: storage-metrics-server
+  chart:
+    name: storage-metrics-server
+    namespace: monitoring
+    createNamespace: {{ $.Values.helm.createNamespace }}
+    version: {{ dig "storage-metrics-server" "version" "" $.Values.helm.releases }}
+    sourceRef:
+      kind: HelmRepository
+      name: appscode-charts-oci
+      namespace: {{ .Release.Namespace }}
+{{- with $vals }}
+  {{- dict "values" . | toYaml | nindent 2 }}
+{{- end }}

charts/opscenter-features/values.yaml

@@ -146,6 +146,8 @@ helm:
       version: "1.7.2"
     metrics-server:
       version: "3.11.0"
+    storage-metrics-server:
+      version: "v2026.7.8"
     monitoring-operator:
       version: "v2026.6.12"
     operator-shard-manager: