feat: added hook for createStockLocationsWorkflow (#11491)

What
This commit introduces the `stockLocationsCreated` hook to the `createStockLocationsWorkflow`.

Why
The hook was missing and necessary to improve the workflow's extensibility.

How
Added the `stockLocationsCreated` hook and updated related logic within the workflow.

Testing

1. Create new medusa project via create-medusa-app
2. Connect this custom branch of medusa to it
3. Create `src/workflows/hooks/stock-locations-created.ts` file with the following content:

```
import { createStockLocationsWorkflow } from "@medusajs/medusa/core-flows"

createStockLocationsWorkflow.hooks.stockLocationsCreated(
  (async ({ stockLocations, additional_data }, { container }) => {
    console.log({stockLocations})
  })
)
```
4. Create new admin account and create there a new stock location
5. The log should be displayed in terminal

packages/core/core-flows/src/stock-location/workflows/create-stock-locations.ts

@@ -1,6 +1,7 @@
 import {
   WorkflowData,
   WorkflowResponse,
+  createHook,
   createWorkflow,
 } from "@medusajs/framework/workflows-sdk"
 
@@ -44,6 +45,14 @@ export const createStockLocationsWorkflowId = "create-stock-locations-workflow"
 export const createStockLocationsWorkflow = createWorkflow(
   createStockLocationsWorkflowId,
   (input: WorkflowData<CreateStockLocationsWorkflowInput>) => {
-    return new WorkflowResponse(createStockLocations(input.locations))
+    const stockLocations = createStockLocations(input.locations)
+
+    const stockLocationsCreated = createHook("stockLocationsCreated", {
+      stockLocations,
+    })
+
+    return new WorkflowResponse(stockLocations, {
+      hooks: [stockLocationsCreated],
+    })
   }
 )