feat(voucher-vault): added initial chart

voucher-vault/Chart.yaml

@@ -0,0 +1,11 @@
+apiVersion: v2
+name: voucher-vault
+description: A Helm chart to deploy VoucherVault on Kubernetes
+
+type: application
+
+version: 1.0.0+up1.27.4
+appVersion: "1.27.4"
+
+maintainers:
+  - name: jklein