ECWID-102900 Order quantity limits for products: storefront

- test failed
- add new fields min/max to as AllowNullable()
- add new fields min/max to UpdateProduct.kt

Author: fialka

src/main/kotlin/com/ecwid/apiclient/v3/dto/product/request/UpdatedProduct.kt

@@ -62,6 +62,8 @@ data class UpdatedProduct(
 	val productCondition: ProductCondition? = null,
 	val externalReferenceId: String? = null,
 	val customsHsTariffCode: String? = null,
+	val minPurchaseQuantity: Int? = null,
+	val maxPurchaseQuantity: Int? = null,
 ) : ApiUpdatedDTO {
 
 	data class Ribbon(

src/test/kotlin/com/ecwid/apiclient/v3/rule/NullablePropertyRules.kt

@@ -68,6 +68,8 @@ val otherNullablePropertyRules: List<NullablePropertyRule<*, *>> = listOf(
 	IgnoreNullable(ProductInventoryUpdateResult::warning),
 
 	AllowNullable(FetchedStorageData::value),
+	AllowNullable(FetchedProduct::minPurchaseQuantity),
+	AllowNullable(FetchedProduct::maxPurchaseQuantity),
 )
 
 val nullablePropertyRules: List<NullablePropertyRule<*, *>> = listOf(