feat(gpu-service): add GPU Instance Types management page

- Card/table list of instance types per Kubernetes cluster with delete
- Create drawer with flavor picker and per-GPU resource form (CPU/RAM/storage)
- Fix unit CPU to 1 for non-acceleratable flavors; N/A memory for generic types
- Add routes and i18n across all locales

config/routes.ts

@@ -211,6 +211,16 @@ const baseRoutes = [
         defaultIcon: 'icon-cloud-outlined',
         component: './gpu-service/instances'
       },
+      {
+        name: 'instanceTypes',
+        path: '/gpu-service/instance-types',
+        key: 'gpuServiceInstanceTypes',
+        icon: 'icon-outline-gpu',
+        access: 'canSeeOrgAdmin',
+        selectedIcon: 'icon-filled-gpu',
+        defaultIcon: 'icon-outline-gpu',
+        component: './gpu-service/instance-types'
+      },
       {
         name: 'templates',
         path: '/gpu-service/templates',