feat(medusa): allow filtering by id for collections (#13495)

Same as this [PR](https://github.com/medusajs/medusa/pull/13174), but would want to get this merged (no response from contributor) since I am sure it is a quick and nice addition

packages/medusa/src/api/admin/collections/validators.ts

@@ -11,6 +11,7 @@ export const AdminGetCollectionParams = createSelectParams()
 
 export const AdminGetCollectionsParamsFields = z.object({
   q: z.string().optional(),
+  id: z.union([z.string(), z.array(z.string())]).optional(),
   title: z.union([z.string(), z.array(z.string())]).optional(),
   handle: z.union([z.string(), z.array(z.string())]).optional(),
   created_at: createOperatorMap().optional(),