Add diagnosis eval baseline diff

src/main/java/com/superbiz/agent/eval/DiagnosisEvalDiffReport.java

@@ -0,0 +1,27 @@
+package com.superbiz.agent.eval;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.util.List;
+
+@Data
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+public class DiagnosisEvalDiffReport {
+
+    private int baselineTotalCases;
+    private int currentTotalCases;
+    private int baselinePassedCases;
+    private int currentPassedCases;
+    private double baselinePassRate;
+    private double currentPassRate;
+    private int regressionCount;
+    private int improvementCount;
+    private int changedCount;
+    private boolean hasRegression;
+    private List<DiagnosisEvalDiffItem> items;
+}