Feat(auth): Rename authentication to auth (#6229)

**What**
- rename `authenticationModule` -> `authModule`

packages/auth/integration-tests/utils/database.ts

@@ -0,0 +1,18 @@
+import * as AuthModels from "@models"
+
+import { TestDatabaseUtils } from "medusa-test-utils"
+
+const pathToMigrations = "../../src/migrations"
+const mikroOrmEntities = AuthModels as unknown as any[]
+
+export const MikroOrmWrapper = TestDatabaseUtils.getMikroOrmWrapper(
+  mikroOrmEntities,
+  pathToMigrations
+)
+
+export const MikroOrmConfig = TestDatabaseUtils.getMikroOrmConfig(
+  mikroOrmEntities,
+  pathToMigrations
+)
+
+export const DB_URL = TestDatabaseUtils.getDatabaseURL()