[WIP] Added sgDMA operator for scatter kvcache communication.

nanovllm/comm/__init__.py

@@ -0,0 +1,8 @@
+"""Communication utilities for nano-vLLM, including sgDMA support."""
+
+try:
+    from .sgdma import memcpy_2d, memcpy_2d_async
+    __all__ = ['memcpy_2d', 'memcpy_2d_async']
+except ImportError:
+    # Extension not compiled yet
+    __all__ = []