Add NHN Cloud API integration with async task support

- NHN Cloud API packages: token, vpc, compute, nks, storage
- REST API endpoints with Swagger documentation
- Async task processing for long-running operations
- CORS configuration for frontend integration
- Enhanced logging for debugging API calls

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

nhn/migrations/0001_initial.py

@@ -0,0 +1,36 @@
+# Generated by Django 4.2.14 on 2026-01-13 16:05
+
+from django.db import migrations, models
+import uuid
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='AsyncTask',
+            fields=[
+                ('id', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False)),
+                ('task_type', models.CharField(choices=[('instance_create', '인스턴스 생성'), ('instance_delete', '인스턴스 삭제'), ('nks_create', 'NKS 클러스터 생성'), ('nks_delete', 'NKS 클러스터 삭제')], max_length=50)),
+                ('status', models.CharField(choices=[('pending', '대기중'), ('running', '실행중'), ('success', '성공'), ('failed', '실패')], default='pending', max_length=20)),
+                ('request_data', models.JSONField(default=dict, help_text='요청 데이터')),
+                ('result_data', models.JSONField(default=dict, help_text='결과 데이터')),
+                ('error_message', models.TextField(blank=True, help_text='에러 메시지')),
+                ('resource_id', models.CharField(blank=True, help_text='생성된 리소스 ID', max_length=255)),
+                ('resource_name', models.CharField(blank=True, help_text='리소스 이름', max_length=255)),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('updated_at', models.DateTimeField(auto_now=True)),
+                ('completed_at', models.DateTimeField(blank=True, null=True)),
+            ],
+            options={
+                'verbose_name': '비동기 작업',
+                'verbose_name_plural': '비동기 작업들',
+                'ordering': ['-created_at'],
+            },
+        ),
+    ]