Add an Organizations menu entry (admin-only) that routes to an upsell
page explaining the multi-tenancy module, and surface disabled
IP Access Control / Quota Limit items in the API Key dropdown with a
tooltip pointing at the enterprise edition. Both placeholders are
shadowed by the enterprise plugin at build time: the route merger
removes the OSS Organizations entry by name, and the dropdown skips
each placeholder when the same key is contributed via configActions.
Add complete Turkish localization for the GPUStack UI including all 18 translation files covering common UI, menus, dashboard, models, playground, resources, API keys, users, backends, benchmarks, clusters, providers, routes, shortcuts, usage, and vendor names.
