add a vector of feature values to store the feature extracted from model

modules/prediction/evaluator/evaluator.h

@@ -22,6 +22,8 @@
 #ifndef MODULES_PREDICTION_EVALUATOR_EVALUATOR_H_
 #define MODULES_PREDICTION_EVALUATOR_EVALUATOR_H_
 
+#include <vector>
+
 #include "google/protobuf/message.h"
 #include "modules/prediction/container/obstacles/obstacle.h"
 /**
@@ -44,6 +46,9 @@ class Evaluator {
   virtual ~Evaluator() = default;
 
   virtual void Evaluate(Obstacle* obstacle) = 0;
+
+ protected:
+  std::vector<double> feature_values;
 };
 
 }  // namespace prediction