feat(locking): Locking module (#9524)

**What**
- Locking Module to manage concurrency
- Default `in-memory` provider

packages/medusa/package.json

@@ -83,6 +83,7 @@
     "@medusajs/index": "^0.0.1",
     "@medusajs/inventory-next": "^0.0.3",
     "@medusajs/link-modules": "^0.2.11",
+    "@medusajs/locking": "^0.0.1",
     "@medusajs/notification": "^0.1.2",
     "@medusajs/notification-local": "^0.0.1",
     "@medusajs/notification-sendgrid": "^0.0.1",

packages/medusa/src/modules/locking.ts

@@ -0,0 +1,6 @@
+import LockingModule from "@medusajs/locking"
+
+export * from "@medusajs/locking"
+
+export default LockingModule
+export const discoveryPath = require.resolve("@medusajs/locking")