feat:AdRankItem添加字段

recommend-feature-client/src/main/java/com/tzld/piaoquan/recommend/feature/domain/ad/base/AdRankItem.java

@@ -33,6 +33,7 @@ public class AdRankItem implements Comparable<AdRankItem> {
     private double bid2;
     private double pidLambda;
     private double weight;
+    private double cpm;
 
     // 记录Item侧用到的特征
     private AdItemFeature itemFeature;