style: separate base class members

Author: voltjia

src/base/xlogy_outscalar_other.h

@@ -21,11 +21,17 @@ class XlogyOutscalarOther : public Operator<XlogyOutscalarOther> {
 
  protected:
   Tensor::Shape self_shape_;
+
   Tensor::Strides self_strides_;
+
   DataType self_type_;
+
   Tensor::Shape out_shape_;
+
   Tensor::Strides out_strides_;
+
   DataType out_type_;
+
   int device_index_{0};
 };