🧹 清理重复配置文件

- 删除根目录中重复的 NestJS 配置文件
- 删除 tsconfig.json, tsconfig.build.json, eslint.config.mjs, .prettierrc
- 保留 wwjcloud-nest/ 目录中的完整配置
- 避免配置冲突，确保项目结构清晰

admin-vben/packages/effects/request/src/request-client/modules/uploader.ts

@@ -0,0 +1,42 @@
+import type { RequestClient } from '../request-client';
+import type { RequestClientConfig } from '../types';
+
+import { isUndefined } from '@vben/utils';
+
+class FileUploader {
+  private client: RequestClient;
+
+  constructor(client: RequestClient) {
+    this.client = client;
+  }
+
+  public async upload<T = any>(
+    url: string,
+    data: Record<string, any> & { file: Blob | File },
+    config?: RequestClientConfig,
+  ): Promise<T> {
+    const formData = new FormData();
+
+    Object.entries(data).forEach(([key, value]) => {
+      if (Array.isArray(value)) {
+        value.forEach((item, index) => {
+          !isUndefined(item) && formData.append(`${key}[${index}]`, item);
+        });
+      } else {
+        !isUndefined(value) && formData.append(key, value);
+      }
+    });
+
+    const finalConfig: RequestClientConfig = {
+      ...config,
+      headers: {
+        'Content-Type': 'multipart/form-data',
+        ...config?.headers,
+      },
+    };
+
+    return this.client.post(url, formData, finalConfig);
+  }
+}
+
+export { FileUploader };