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>

manage.py

@@ -0,0 +1,22 @@
+#!/usr/bin/env python
+"""Django's command-line utility for administrative tasks."""
+import os
+import sys
+
+
+def main():
+    """Run administrative tasks."""
+    os.environ.setdefault("DJANGO_SETTINGS_MODULE", "nhn_prj.settings")
+    try:
+        from django.core.management import execute_from_command_line
+    except ImportError as exc:
+        raise ImportError(
+            "Couldn't import Django. Are you sure it's installed and "
+            "available on your PYTHONPATH environment variable? Did you "
+            "forget to activate a virtual environment?"
+        ) from exc
+    execute_from_command_line(sys.argv)
+
+
+if __name__ == "__main__":
+    main()