feat: tease enterprise multi-tenancy and API key controls in OSS

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.

src/locales/tr-TR/apikeys.ts

@@ -23,5 +23,7 @@ export default {
   'apikeys.accessScope.inference': 'Inference APIs',
   'apikeys.access.permissions': 'Access Permissions',
   'apikeys.type.auto': 'Auto-generated',
-  'apikeys.type.custom': 'Custom'
+  'apikeys.type.custom': 'Custom',
+  'apikeys.button.ipConfig': 'IP Access Control',
+  'quotaLimits.button.title': 'Quota Limit'
 };

src/locales/tr-TR/common.ts

@@ -46,6 +46,7 @@ export default {
   'common.button.enabled': 'Etkin',
   'common.button.disabled': 'Devre dışı',
   'common.button.upgrade': 'Yükselt',
+  'common.enterprise.feature': 'Available in GPUStack Enterprise',
   'common.input.holder': 'Lütfen girin',
   'common.validate.value': '{name} değeri gereklidir',
   'common.button.edit': 'Düzenle',

src/locales/tr-TR/menu.ts

@@ -29,6 +29,7 @@ export default {
   'menu.accessControl': 'Erişim Kontrolü',
   'menu.accessControl.apikeys': 'API Anahtarları',
   'menu.accessControl.users': 'Kullanıcılar',
+  'menu.accessControl.organizations': 'Organizasyonlar',
   'menu.profile': 'Preferences',
   'menu.login': 'Giriş',
   'menu.usage': 'Kullanım',

src/locales/tr-TR/organizations.ts

@@ -0,0 +1,15 @@
+export default {
+  'organizations.upsell.title': 'Organizations are an Enterprise feature',
+  'organizations.upsell.subtitle':
+    'Multi-tenancy lets you isolate users, resources, and quotas across teams. Upgrade to GPUStack Enterprise to manage organizations.',
+  'organizations.upsell.featuresTitle': 'What you get in Enterprise',
+  'organizations.upsell.feature.orgs':
+    'Create organizations to group users and isolate workloads',
+  'organizations.upsell.feature.members':
+    'Manage members and roles per organization',
+  'organizations.upsell.feature.quotas':
+    'Set resource and token quotas per organization',
+  'organizations.upsell.feature.isolation':
+    'Scope API keys, model deployments, and resources per organization',
+  'organizations.upsell.cta': 'Learn about Enterprise'
+};