Style: ProductsDtoMapper의 클래스명, 메서드명 변경

- ProductsDtoMapper 클래스의 이름을 DomainDtoMapper로 변경
- DomainDtoMapper에서 두개의 도메인 객체를 참조하기 때문에 메서드명에 사용되었던 Domain이라는 단어를 실제 도메인 객체 이름으로 변경했습니다.

BE/src/main/java/sidedish/com/controller/ProductsDtoMapper.java → BE/src/main/java/sidedish/com/controller/DomainDtoMapper.java

@@ -8,16 +8,16 @@
 import sidedish.com.domain.Product;
 
 @Component
-public class ProductsDtoMapper {
+public class DomainDtoMapper {
 
-	public List<ProductBasicTypeResponse> toProductsBasicTypeResponseFromDomain(
+	public List<ProductBasicTypeResponse> toProductsBasicTypeResponseFromProducts(
 		List<Product> products) {
 		return products.stream()
-			.map(this::toProductMealTypeResponseFromDomain)
+			.map(this::toProductMealTypeResponseFromProduct)
 			.collect(Collectors.toList());
 	}
 
-	private ProductBasicTypeResponse toProductMealTypeResponseFromDomain(
+	private ProductBasicTypeResponse toProductMealTypeResponseFromProduct(
 		Product product) {
 		return new ProductBasicTypeResponse(
 			product.getId(),
@@ -29,7 +29,7 @@ private ProductBasicTypeResponse toProductMealTypeResponseFromDomain(
 			product.getDiscountPolicy().getPolicyName());
 	}
 
-	public ProductDetailTypeResponse toProductDetailTypeFromDomain(
+	public ProductDetailTypeResponse toProductDetailTypeFromProduct(
 		Product product) {
 		return new ProductDetailTypeResponse(
 			product.getId(),