chore(rbac): user link and utils (#14320)

packages/medusa/src/feature-flags/rbac.ts

@@ -0,0 +1,10 @@
+import { FlagSettings } from "@medusajs/framework/feature-flags"
+
+const RbacFeatureFlag: FlagSettings = {
+  key: "rbac",
+  default_val: false,
+  env_key: "MEDUSA_FF_RBAC",
+  description: "Enable role based access control",
+}
+
+export default RbacFeatureFlag