REFACTOR(postgresql): restructure pgweb

- and pg-dev folder str...
- Remove argocd/, helm-values/ subdirectories
- Move files to parent directory with standardized names
- Add namespace.yaml to both apps with Goldilocks labels
- Preserve vault/ subdirectories (pgweb: 3 files, postgresql-dev: 1
  file)
- Update main kustomization.yaml to reference argocd.yaml files directly
- Update postgresql-dev helm valueFiles path
- Comment out argocd.yaml in each app's kustomization.yaml to prevent
  circular reference

Applications restructured:
- pgweb
- postgresql-dev

pgweb/argocd.yaml

@@ -0,0 +1,31 @@
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: pgweb
+  namespace: argocd
+  finalizers:
+    - resources-finalizer.argocd.argoproj.io
+spec:
+  project: default
+  
+  sources:
+    - repoURL: https://gitea0213.kro.kr/bluemayne/databases.git
+      targetRevision: main
+      path: pgweb
+  
+  destination:
+    server: https://kubernetes.default.svc
+    namespace: pgweb
+  
+  syncPolicy:
+    automated:
+      prune: true
+      selfHeal: true
+    syncOptions:
+      - CreateNamespace=true
+    retry:
+      limit: 5
+      backoff:
+        duration: 5s
+        factor: 2
+        maxDuration: 3m