Add self-contained API simulators lab with Compose and Helm.

Ship Proxmox, oVirt, VMware, and OpenStack behind one Postgres stack,
Makefile helpers (up/clean/helm up|down/push), and a Helm chart with
namespace, Let's Encrypt ingresses, migrate inits, and skip-if-seeded jobs.

charts/api-simulators-lab/Chart.yaml

@@ -0,0 +1,14 @@
+apiVersion: v2
+name: api-simulators-lab
+description: Laboratory stack — Proxmox, oVirt, VMware and OpenStack API simulators
+type: application
+version: 0.1.0
+appVersion: "latest"
+keywords:
+  - simulators
+  - proxmox
+  - ovirt
+  - vmware
+  - openstack
+maintainers:
+  - name: inecs