feat: expose health and demo character APIs

apps/api/src/main.ts

@@ -5,6 +5,7 @@ import { configureApplication } from './app.config';
 async function bootstrap() {
   const app = await NestFactory.create(AppModule);
   configureApplication(app);
+  app.enableShutdownHooks();
   await app.listen(process.env.PORT ?? 3000);
 }
 bootstrap();