feat(dashboard): add promotions to campaign UI (#7283)

* feat(core-flows,types,medusa): API to add promotions to campaign

* chore: consolidate specs

* chore: split workflows step into 2

* chore: fix tests

* chore: fix specs

* chore: add promotions to campaign UI

* chore: fix bug wrt to not refreshing

* chore: address review comments

packages/medusa/src/api-v2/admin/campaigns/[id]/promotions/route.ts

@@ -4,7 +4,7 @@ import {
 } from "../../../../../types/routing"
 
 import { addOrRemoveCampaignPromotionsWorkflow } from "@medusajs/core-flows"
-import { LinkMethodRequest } from "@medusajs/types/src"
+import { LinkMethodRequest } from "@medusajs/types"
 import { refetchCampaign } from "../../helpers"
 
 export const POST = async (