Spider2local

- 添加了0.1版本缺少的获取响应头的功能。
- 优化了代码中的部分不合理的位置。

- Added the missing feature for obtaining response headers in version 0.1.
- Optimized some unreasonable positions in the code.

**Full Changelog**: https://github.com/beichenlpl/spider2local/commits/0.1