feat(user): Init user module (#6293)

* init user module

* add migration

* update module with latest utils

* pr ready

* make interface types interfaces

packages/user/integration-tests/utils/config.ts

@@ -0,0 +1,6 @@
+import { ModuleServiceInitializeOptions } from "@medusajs/types"
+
+export const databaseOptions: ModuleServiceInitializeOptions["database"] = {
+  schema: "public",
+  clientUrl: "medusa-user-test",
+}