feat: implement HashArray utility and refactor product key generation for Redis

internal/wb/products/repository_api.go

@@ -25,6 +25,10 @@ type apiRepository struct {
 	marketplaceRepository marketplace.Repository
 }
 
+func GetProductsKey(identifier string) string {
+	return fmt.Sprintf("wb:products:%s", identifier)
+}
+
 func (a apiRepository) ParseMarketplace(ctx context.Context, marketplaceId int) (*marketplace.Marketplace, string, error) {
 	marketplaceByID, err := a.marketplaceRepository.GetMarketplaceByID(ctx, marketplaceId)
 	if err != nil {
@@ -110,7 +114,7 @@ func (a apiRepository) StreamAllProductsCache(ctx context.Context, marketplaceId
 
 	converter := generated.ConverterImpl{}
 
-	key := fmt.Sprintf("wb:products:%s", identifier)
+	key := GetProductsKey(identifier)
 	var cachedMessage pb.GetProductsResponse
 	err = redis.ReadProtoMessage(ctx, key, &cachedMessage)
 	if err == nil && len(cachedMessage.Products) > 0 {