style: separate base class members

Author: voltjia

src/base/multilabel_margin_loss_forward_output.h

@@ -31,17 +31,29 @@ class MultilabelMarginLossForwardOutput
 
  protected:
   Tensor::Shape self_shape_;
+
   Tensor::Strides self_strides_;
+
   DataType self_type_;
+
   Tensor::Shape target_shape_;
+
   Tensor::Strides target_strides_;
+
   DataType target_type_;
+
   Tensor::Shape output_shape_;
+
   Tensor::Strides output_strides_;
+
   DataType output_type_;
+
   Tensor::Shape is_target_shape_;
+
   Tensor::Strides is_target_strides_;
+
   DataType is_target_type_;
+
   int device_index_{0};
 };