feat(utils): dml to graphql (#8951)

packages/modules/inventory-next/src/joiner-config.ts

@@ -1,6 +1,8 @@
 import { defineJoinerConfig, Modules } from "@medusajs/utils"
+import { default as schema } from "./schema"
 
 export const joinerConfig = defineJoinerConfig(Modules.INVENTORY, {
+  schema,
   alias: [
     {
       name: ["inventory_items", "inventory_item", "inventory"],