feat(medusa): add stock_location_id filter to providers api (#8319)

what:

- adds a filter to fulfillment providers API to scope by stock locations

RESOLVES CC-260

packages/medusa/src/api/admin/fulfillment-providers/middlewares.ts

@@ -1,4 +1,5 @@
 import { MiddlewareRoute } from "../../../types/middlewares"
+import { maybeApplyLinkFilter } from "../../utils/maybe-apply-link-filter"
 import { validateAndTransformQuery } from "../../utils/validate-query"
 import * as QueryConfig from "./query-config"
 import { AdminFulfillmentProvidersParams } from "./validators"
@@ -12,6 +13,11 @@ export const adminFulfillmentProvidersRoutesMiddlewares: MiddlewareRoute[] = [
         AdminFulfillmentProvidersParams,
         QueryConfig.listTransformQueryConfig
       ),
+      maybeApplyLinkFilter({
+        entryPoint: "location_fulfillment_provider",
+        resourceId: "fulfillment_provider_id",
+        filterableField: "stock_location_id",
+      }),
     ],
   },
 ]

packages/medusa/src/api/admin/fulfillment-providers/validators.ts

@@ -12,6 +12,7 @@ export const AdminFulfillmentProvidersParams = createFindParams({
   .merge(
     z.object({
       id: z.union([z.string(), z.array(z.string())]).optional(),
+      stock_location_id: z.union([z.string(), z.array(z.string())]).optional(),
       is_enabled: OptionalBooleanValidator,
       q: z.string().optional(),
     })