chore(headless): move product-list ssr to its own directory (#4631)

This PR moves the file for the product-list ssr controller definition in
its own directory instead of in the product-listing directory as it is
used for both product-listing and search, not just product-listing.

https://coveord.atlassian.net/browse/KIT-3488

packages/headless/src/controllers/commerce/product-listing/headless-product-listing.ssr.ts → packages/headless/src/controllers/commerce/product-list/headless-product-list.ssr.ts

@@ -4,13 +4,13 @@ import {
   SolutionType,
   SubControllerDefinitionWithoutProps,
 } from '../../../app/commerce-ssr-engine/types/common.js';
-import {buildSearch, Search} from '../search/headless-search.js';
 import {
   ProductListing,
   buildProductListing,
-} from './headless-product-listing.js';
+} from '../product-listing/headless-product-listing.js';
+import {buildSearch, Search} from '../search/headless-search.js';
 
-export type {ProductListingState as ProductListState} from './headless-product-listing.js';
+export type {ProductListingState as ProductListState} from '../product-listing/headless-product-listing.js';
 export type ProductList = Pick<
   ProductListing | Search,
   'state' | 'subscribe' | 'interactiveProduct'

packages/headless/src/ssr-commerce.index.ts

@@ -177,8 +177,8 @@ export {defineParameterManager} from './controllers/commerce/core/parameter-mana
 export type {
   ProductList,
   ProductListState,
-} from './controllers/commerce/product-listing/headless-product-listing.ssr.js';
-export {defineProductList} from './controllers/commerce/product-listing/headless-product-listing.ssr.js';
+} from './controllers/commerce/product-list/headless-product-list.ssr.js';
+export {defineProductList} from './controllers/commerce/product-list/headless-product-list.ssr.js';
 
 export type {ProductView} from './controllers/commerce/product-view/headless-product-view.ssr.js';
 export {defineProductView} from './controllers/commerce/product-view/headless-product-view.ssr.js';