feat(cart): Add line items in cart-creation (#6114)

packages/types/src/cart/mutations.ts

@@ -25,17 +25,15 @@ export interface CreateCartDTO {
   region_id?: string
   customer_id?: string
   sales_channel_id?: string
-
   email?: string
   currency_code: string
-
   shipping_address_id?: string
   billing_address_id?: string
-
   shipping_address?: CreateAddressDTO | UpdateAddressDTO
   billing_address?: CreateAddressDTO | UpdateAddressDTO
-
   metadata?: Record<string, unknown>
+
+  items?: CreateLineItemDTO[]
 }
 
 export interface UpdateCartDTO {