feat(k8s/grocy): add grocy stack (deployment scaled to 0 for data migration)

kubernetes/app/grocy/service.yaml

@@ -0,0 +1,12 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: grocy
+  namespace: grocy
+spec:
+  selector:
+    app: grocy
+  ports:
+    - port: 80
+      targetPort: 80
+      name: http