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                                            TranscenderNing

add reft method

![image](https://github.com/user-attachments/assets/da6a53ee-fff5-4cef-b391-928c96c25327)

add reft method

reftTrainer重写了compute_loss函数，前向传播过程中输入除了input_id， attention_maks, labels, 还需要unit_locations，表示干预哪些位置token的隐藏状态

> 单测挂了 ![image](https://private-user-images.githubusercontent.com/63761690/387972133-9e75dbe0-e185-4fc3-81d1-f92f2bbbc60a.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.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.c1PFk4gfj5wjdaefPM9wc7wfOJXQcdwnlxB1wu15HIs) ![image](https://github.com/user-attachments/assets/58282cfc-f3b8-45ea-9809-78e93fe66550)