feat: ppob callback

src/transaction/transaction.module.ts

@@ -0,0 +1,10 @@
+import { Module } from '@nestjs/common';
+import { TransactionService } from './transaction.service';
+import { TransactionController } from './transaction.controller';
+import { PpobCallbackController } from './ppob_callback.controller';
+
+@Module({
+  controllers: [TransactionController, PpobCallbackController],
+  providers: [TransactionService],
+})
+export class TransactionModule {}