Refactor middleware configuration in backend/src/app.module.ts

- Consolidated the middleware application for AuthMiddleware in backend/src/app.module.ts to improve readability while maintaining the exclusion of document-processor routes.

Author: adamrefaey

backend/src/app.module.ts

@@ -26,9 +26,6 @@ import { DocumentProcessorModule } from './document-processor/document-processor
 })
 export class AppModule implements NestModule {
   configure(consumer: MiddlewareConsumer) {
-    consumer
-      .apply(AuthMiddleware)
-      .exclude('document-processor/(.*)')
-      .forRoutes('*');
+    consumer.apply(AuthMiddleware).exclude('document-processor/(.*)').forRoutes('*');
   }
 }