move money transaction interface

src/main/java/com/faf223/expensetrackerfaf/model/Expense.java

@@ -1,5 +1,4 @@
 package com.faf223.expensetrackerfaf.model;
-import com.faf223.expensetrackerfaf.util.IMoneyTransaction;
 import com.fasterxml.jackson.annotation.JsonIgnore;
 import jakarta.persistence.*;
 import lombok.AllArgsConstructor;

src/main/java/com/faf223/expensetrackerfaf/model/IMoneyTransaction.java

@@ -0,0 +1,11 @@
+package com.faf223.expensetrackerfaf.model;
+
+import com.faf223.expensetrackerfaf.model.User;
+
+public interface IMoneyTransaction {
+
+    User getUser();
+    int getAmount();
+    String getCategory();
+
+}

src/main/java/com/faf223/expensetrackerfaf/model/Income.java

@@ -1,6 +1,5 @@
 package com.faf223.expensetrackerfaf.model;
 
-import com.faf223.expensetrackerfaf.util.IMoneyTransaction;
 import com.fasterxml.jackson.annotation.JsonIgnore;
 import jakarta.persistence.*;
 import lombok.AllArgsConstructor;