feat(transaction): 添加游戏事务系统 | add game transaction system (#381)

- TransactionManager/TransactionContext 事务管理
- MemoryStorage/RedisStorage/MongoStorage 存储实现
- CurrencyOperation/InventoryOperation/TradeOperation 内置操作
- SagaOrchestrator 分布式 Saga 编排
- withTransactions() Room 集成
- 完整中英文文档

packages/framework/transaction/src/integration/index.ts

@@ -0,0 +1,11 @@
+/**
+ * @zh 集成模块导出
+ * @en Integration module exports
+ */
+
+export {
+    withTransactions,
+    TransactionRoom,
+    type TransactionRoomConfig,
+    type ITransactionRoom,
+} from './RoomTransactionMixin.js'