text: Title: How to do sentence_dedup
  Body: ### Search before continuing 先搜索，再继续
  
  - [x] I have searched the Data-Juicer issues and found no similar feature requests. 我已经搜索了 Data-Juicer 的 issue 列表但是没有发现类似的功能需求。
  
  
  ### Description 描述
  
  请问怎么做句子级的去重，有没有推荐的开源实现？谢谢
  
  ### Use case 使用场景
  
  _No response_
  
  ### Additional 额外信息
  
  _No response_
  
  ### Are you willing to submit a PR for this feature? 您是否乐意为此功能提交一个 PR？
  
  - [ ] Yes I'd like to help by submitting a PR! 是的！我愿意提供帮助并提交一个PR！