feat: RankingInfo 클래스 추가 및 랭킹 정보 표현을 위한 레코드 구현

Author: rnqhstmd

apps/commerce-api/src/main/java/com/loopers/domain/ranking/RankingInfo.java

@@ -0,0 +1,21 @@
+package com.loopers.domain.ranking;
+
+public record RankingInfo(
+        Long productId,
+        String productName,
+        Long price,
+        String brandName,
+        Long rank,
+        Double score
+) {
+    public static RankingInfo of(
+            Long productId,
+            String productName,
+            Long price,
+            String brandName,
+            Long rank,
+            Double score
+    ) {
+        return new RankingInfo(productId, productName, price, brandName, rank, score);
+    }
+}