FEAT(goldilocks): add vpa and goldilocks

- for resource optimization
- Add VPA (Vertical Pod Autoscaler) for automatic resource
  recommendation
- Add Goldilocks dashboard for visualizing VPA recommendations
- Update kustomization.yaml to include both applications

vpa/argocd/vpa.yaml

@@ -0,0 +1,46 @@
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: vpa
+  namespace: argocd
+  finalizers:
+    - resources-finalizer.argocd.argoproj.io
+spec:
+  project: default
+
+  sources:
+    # Helm chart from external repository
+    - repoURL: https://charts.fairwinds.com/stable
+      chart: vpa
+      targetRevision: 4.6.0
+      helm:
+        valueFiles:
+          - $values/vpa/helm-values/vpa.yaml
+    # Values file from Git repository
+    - repoURL: https://gitea0213.kro.kr/bluemayne/cluster-infrastructure.git
+      targetRevision: main
+      ref: values
+
+  destination:
+    server: https://kubernetes.default.svc
+    namespace: vpa
+
+  syncPolicy:
+    automated:
+      prune: true
+      selfHeal: true
+      allowEmpty: false
+
+    syncOptions:
+      - CreateNamespace=true
+      - PrunePropagationPolicy=foreground
+      - PruneLast=true
+
+    retry:
+      limit: 5
+      backoff:
+        duration: 5s
+        factor: 2
+        maxDuration: 3m
+
+  revisionHistoryLimit: 10

vpa/helm-values/vpa.yaml

@@ -0,0 +1,47 @@
+# VPA Helm Values
+# Reference: https://github.com/FairwindsOps/charts/tree/master/stable/vpa
+
+# Recommender - recommends resource requests based on historical usage
+recommender:
+  enabled: true
+  replicaCount: 1
+
+  resources:
+    limits:
+      cpu: null
+      memory: 1Gi
+    requests:
+      cpu: 50m
+      memory: 512Mi
+
+# Updater - applies recommended resource requests to pods
+updater:
+  enabled: true
+  replicaCount: 1
+
+  resources:
+    limits:
+      cpu: null
+      memory: 1Gi
+    requests:
+      cpu: 50m
+      memory: 512Mi
+
+# Admission Controller - injects resource requests into new pods
+admissionController:
+  enabled: true
+  replicaCount: 1
+
+  resources:
+    limits:
+      cpu: null
+      memory: 512Mi
+    requests:
+      cpu: 50m
+      memory: 256Mi
+
+  # Generate self-signed certificate
+  generateCertificate: true
+
+# Optional: Configure default VPA behavior
+# metrics-server should be installed in the cluster

vpa/kustomization.yaml

@@ -0,0 +1,6 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+resources:
+  # ArgoCD Application 리소스는 infrastructure/kustomization.yaml에서 관리
+  # - argocd/vpa.yaml