feat: 优化项目目录结构

apps/backend/src/common/interceptors/response.interceptor.ts

@@ -0,0 +1,24 @@
+import {
+  CallHandler,
+  ExecutionContext,
+  Injectable,
+  NestInterceptor,
+} from '@nestjs/common';
+import { Observable } from 'rxjs';
+import { map } from 'rxjs/operators';
+
+@Injectable()
+export class ResponseInterceptor implements NestInterceptor {
+  intercept(
+    context: ExecutionContext,
+    next: CallHandler<any>,
+  ): Observable<any> | Promise<Observable<any>> {
+    return next.handle().pipe(
+      map((data) => ({
+        statusCode: 200,
+        message: '请求成功',
+        data,
+      })),
+    );
+  }
+}