feat(task1): restructure directories for turborepo monorepo

- Move backend/ to apps/server/ via git mv
- Move frontend/ to apps/admin/ via git mv
- Create packages/typescript-config/ with base, nestjs, and react-vite presets

apps/server/src/operation-logs/operation-logs.module.ts

@@ -0,0 +1,14 @@
+import { Module, Global } from '@nestjs/common';
+import { TypeOrmModule } from '@nestjs/typeorm';
+import { OperationLog } from '../entities/operation-log.entity';
+import { OperationLogsService } from './operation-logs.service';
+import { OperationLogsController } from './operation-logs.controller';
+
+@Global()
+@Module({
+  imports: [TypeOrmModule.forFeature([OperationLog])],
+  controllers: [OperationLogsController],
+  providers: [OperationLogsService],
+  exports: [OperationLogsService],
+})
+export class OperationLogsModule {}