feat(medusa,event-bus-local,event-bus-redis): Event Bus modules (#2599)

packages/utils/package.json

@@ -30,6 +30,7 @@
   "scripts": {
     "prepare": "cross-env NODE_ENV=production yarn run build",
     "build": "tsc --build",
+    "watch": "tsc --build --watch",
     "test": "jest --passWithNoTests src"
   }
 }