feat(admin-ui, medusa-js, medusa-react, medusa): Multiwarehousing UI (#3403)

* add "get-variant" endpoint

* import from a different place

* fix unit test

* add changeset

* inventory management for orders

* add changeset

* initial create-fulfillment

* add changeset

* type oas and admin

* Move inv. creation and listing from admin repo

* Fix location editing bug (CORE-1216)

* Fix default warehouse on inventory table view

* remove actions from each table line

* Use feature flag hook instead of context directly

* remove manage inventory action if inventory management is not enabled

* Address review comments

* fix queries made when inventorymodules are disabled

* variant form changes for feature enabled

* move exclamation icon into warning icon

* ensure queries are not run unless feature is enabled for create-fulfillment

---------

Co-authored-by: Philip Korsholm <philip.korsholm@hotmail.com>
Co-authored-by: Philip Korsholm <88927411+pKorsholm@users.noreply.github.com>

packages/medusa-react/src/hooks/admin/variants/queries.ts

@@ -1,7 +1,9 @@
 import {
+  AdminGetVariantParams,
   AdminGetVariantsParams,
   AdminGetVariantsVariantInventoryRes,
   AdminVariantsListRes,
+  AdminVariantsRes,
 } from "@medusajs/medusa"
 import { Response } from "@medusajs/medusa-js"
 import { useQuery } from "@tanstack/react-query"
@@ -32,6 +34,24 @@ export const useAdminVariants = (
   return { ...data, ...rest } as const
 }
 
+export const useAdminVariant = (
+  id: string,
+  query?: AdminGetVariantParams,
+  options?: UseQueryOptionsWrapper<
+    Response<AdminVariantsRes>,
+    Error,
+    ReturnType<VariantQueryKeys["detail"]>
+  >
+) => {
+  const { client } = useMedusa()
+  const { data, ...rest } = useQuery(
+    adminVariantKeys.detail(id),
+    () => client.admin.variants.retrieve(id, query),
+    options
+  )
+  return { ...data, ...rest } as const
+}
+
 export const useAdminVariantsInventory = (
   id: string,
   options?: UseQueryOptionsWrapper<