GitLab

* Add finetuning Colossal-Llama-2 example

* Add finetuning Colossal-Llama-2 example 2

* Add finetuning Colossal-Llama-2 example and support NEFTuning

* Add inference example and refine neftune

* Modify readme file

* update the imports

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Co-authored-by: Xu Yuanchen <yuanchen.xu00@gmail.com>
Co-authored-by: Camille Zhong <44392324+Camille7777@users.noreply.github.com>