[feat] 페이징 응답 dto 및 변환 함수 추가

src/main/java/com/dnd/gongmuin/common/dto/PageMapper.java

@@ -0,0 +1,19 @@
+package com.dnd.gongmuin.common.dto;
+
+import static lombok.AccessLevel.*;
+
+import org.springframework.data.domain.Slice;
+
+import lombok.NoArgsConstructor;
+
+@NoArgsConstructor(access = PRIVATE)
+public class PageMapper {
+
+	public static <T> PageResponse<T> toPageResponse(Slice<T> page) {
+		return new PageResponse<>(
+			page.getContent(),
+			page.getNumberOfElements(),
+			page.hasNext()
+		);
+	}
+}

src/main/java/com/dnd/gongmuin/common/dto/PageResponse.java

@@ -0,0 +1,10 @@
+package com.dnd.gongmuin.common.dto;
+
+import java.util.List;
+
+public record PageResponse<T> (
+	List<T> content,
+	long size,
+	boolean hasNext
+){
+}