helm database postgresql

- add Chart.lock to .gitignore
- update helmfile.yaml with database
- add values.yaml with postgresql
- add Chart.yaml with postgresql

helm/charts/02-database/Chart.yaml

@@ -0,0 +1,11 @@
+apiVersion: v2
+name: hlaeja-database
+description: A Helm chart for the hlaeja database chart wrapper
+version: 0.1.0
+
+dependencies:
+
+  # https://artifacthub.io/packages/helm/bitnami/postgresql
+  - name: postgresql
+    version: 16.7.21
+    repository: "oci://registry-1.docker.io/bitnamicharts"