feat(workflows): Data aggregation (#4732)

* apply the aggregator automatically

* add comment

* apply aggregate

* improve pipe aggregation

* improve test cases

* improvements

* clean tests

* renameing to merge

* fix merge apply

* move merge apply

* cleanup cart workflow and end point

* fixes and naming

packages/types/src/workflow/cart/create-cart.ts

@@ -1,5 +1,4 @@
 import { AddressDTO } from "../../address"
-import { WorkflowInputConfig } from "../common"
 
 export interface CreateLineItemInputDTO {
   variant_id: string
@@ -7,7 +6,6 @@ export interface CreateLineItemInputDTO {
 }
 
 export interface CreateCartWorkflowInputDTO {
-  config?: WorkflowInputConfig
   region_id?: string
   country_code?: string
   items?: CreateLineItemInputDTO[]