split to 2 files: tensorrt_engine and onnx engine

Azaion.Inference/remote_command.pyx

@@ -20,3 +20,9 @@ cdef class RemoteCommand:
     cdef from_msgpack(bytes data):
         unpacked = msgpack.unpackb(data, strict_map_key=False)
         return RemoteCommand(unpacked.get("CommandType"), unpacked.get("Data"))
+
+    cdef bytes serialize(self):
+        return msgpack.packb({
+            "CommandType": self.command_type,
+            "Data": self.data
+        })