REFACTOR(argocd): merge image-updater into argocd

- Move image-updater Application to argocd folder
- Move helm-values and secrets to argocd
- Remove separate argocd-image-updater folder
- Update kustomization references

argocd/manifests/image-updater-secret.yaml

@@ -0,0 +1,50 @@
+apiVersion: external-secrets.io/v1
+kind: ExternalSecret
+metadata:
+  name: zot-registry-credentials
+  namespace: argocd
+spec:
+  refreshInterval: 1h
+  secretStoreRef:
+    kind: ClusterSecretStore
+    name: vault-backend
+  target:
+    name: zot-registry-credentials
+    creationPolicy: Owner
+    template:
+      type: kubernetes.io/dockerconfigjson
+      data:
+        .dockerconfigjson: |
+          {"auths":{"zot0213.kro.kr":{"username":"{{ .USERNAME }}","password":"{{ .PASSWORD }}","auth":"{{ printf "%s:%s" .USERNAME .PASSWORD | b64enc }}"}}}
+  data:
+    - secretKey: USERNAME
+      remoteRef:
+        key: zot
+        property: USERNAME
+    - secretKey: PASSWORD
+      remoteRef:
+        key: zot
+        property: PASSWORD
+---
+apiVersion: external-secrets.io/v1
+kind: ExternalSecret
+metadata:
+  name: github-creds
+  namespace: argocd
+spec:
+  refreshInterval: 1h
+  secretStoreRef:
+    kind: ClusterSecretStore
+    name: vault-backend
+  target:
+    name: github-creds
+    creationPolicy: Owner
+  data:
+    - secretKey: username
+      remoteRef:
+        key: github
+        property: username
+    - secretKey: password
+      remoteRef:
+        key: github
+        property: password