chore(backstage): Added database and secrets for backstage

manifests/artemis/backstage/db-cluster.yaml

@@ -0,0 +1,23 @@
+apiVersion: postgresql.cnpg.io/v1
+kind: Cluster
+metadata:
+  name: backstage-postgres
+  namespace: backstage
+spec:
+  imageName: ghcr.io/tensorchord/cloudnative-pgvecto.rs:16.5-v0.3.0@sha256:be3f025d79aa1b747817f478e07e71be43236e14d00d8a9eb3914146245035ba
+  instances: 1
+  managed:
+    roles:
+      - name: backstage
+        superuser: true
+        login: true
+  bootstrap:
+    initdb:
+      database: backstage
+      owner: backstage
+      secret:
+        name: backstage-postgres-user
+
+  storage:
+    size: 2Gi
+    storageClass: local-path

manifests/artemis/backstage/kustomization.yaml

@@ -0,0 +1,9 @@
+---
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+metadata:
+  name: backstage
+
+resources:
+  - secret.yaml
+  - db-cluster.yaml

manifests/artemis/backstage/secret.yaml

@@ -0,0 +1,33 @@
+---
+apiVersion: external-secrets.io/v1
+kind: ExternalSecret
+metadata:
+  name: backstage
+spec:
+  refreshInterval: 1h
+  secretStoreRef:
+    name: platform
+    kind: ClusterSecretStore
+  target:
+    name: backstage-postgres-user
+  data:
+    - secretKey: DB_USERNAME
+      remoteRef:
+        key: backstage/db
+        property: DB_USERNAME
+    - secretKey: DB_DATABASE_NAME
+      remoteRef:
+        key: backstage/db
+        property: DB_DATABASE_NAME
+    - secretKey: DB_PASSWORD
+      remoteRef:
+        key: backstage/db
+        property: DB_PASSWORD
+    - secretKey: username
+      remoteRef:
+        key: backstage/db
+        property: username
+    - secretKey: password
+      remoteRef:
+        key: backstage/db
+        property: password