feat(gpu-service): instance-type activate/deactivate, displayName, unified flavor display

- add activate/deactivate row actions (phase-driven) with new PUT APIs
- add displayName field; list shows displayName || name
- rename list OS column title to Platform
- share a two-line flavor renderer between the create dropdown and the list
- normalize 'CPU Only' label to 'CPU-only'

src/locales/tr-TR/gpuservice.ts

@@ -128,12 +128,16 @@ export default {
   'gpuservice.instance.ram': 'RAM',
   'gpuservice.instance.os': 'OS',
   'gpuservice.instance.arch': 'Mimari',
-'gpuservice.instanceType': 'GPU Instance Type',
+  'gpuservice.instanceType': 'GPU Instance Type',
   'gpuservice.instanceType.add': 'Add Instance Type',
   'gpuservice.instanceType.flavor': 'Flavor',
-  'gpuservice.instanceType.flavor.required': 'Please select an instance type flavor',
+  'gpuservice.instanceType.flavor.required':
+    'Please select an instance type flavor',
   'gpuservice.instanceType.flavor.gpuGroup': 'GPU Compute',
   'gpuservice.instanceType.flavor.cpuGroup': 'CPU Compute',
+  'gpuservice.instanceType.activate': 'Activate',
+  'gpuservice.instanceType.deactivate': 'Deactivate',
+  'gpuservice.instanceType.platform': 'Platform',
   'gpuservice.instanceType.product': 'Product',
   'gpuservice.instanceType.unitCpu': 'Unit CPU',
   'gpuservice.instanceType.unitCpu.tip': 'CPU allocated per GPU',