feat(types,modules-sdk): basic module setup for promotions (#5920)

RESOLVES CORE-1580

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

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