feat: add Curenncy class

src/main/java/org/example/model/Currency.java

+package org.example.model;
+
+public class Currency {
+    int point;
+    int uang;
+    
+    
+    public Currency(int point, int uang) {
+        this.point = point;
+        this.uang = uang;
+    }
+
+    public int getPoint() {
+        return point;
+    }
+    public void setPoint(int point) {
+        this.point = point;
+    }
+    public int getUang() {
+        return uang;
+    }
+    public void setUang(int uang) {
+        this.uang = uang;
+    }
+    
+    
+}
+