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

src/locales/zh-CN/no-result.ts

@@ -63,6 +63,9 @@ export default {
   'noresult.gpuservice.storage.title': '暂无存储',
   'noresult.gpuservice.storage.subTitle': '尚未添加任何存储。',
   'noresult.gpuservice.storage.nofound': '未找到匹配的存储',
+  'noresult.gpuservice.instanceType.title': '暂无实例类型',
+  'noresult.gpuservice.instanceType.subTitle': '创建一个实例类型以开始使用',
+  'noresult.gpuservice.instanceType.nofound': '未找到实例类型',
   'noresult.gpuservice.storageType.title': '暂无存储类型',
   'noresult.gpuservice.storageType.subTitle': '尚未添加任何存储类型。',
   'noresult.gpuservice.storageType.nofound': '未找到匹配的存储类型',