Feature/llama factory llama2 pipeline (#95)

* added llama-factory under llm_rl

* added sft training bash

* added datasets from llama-factory; will delete later

* finished llama-2-13b train and inference

* fixed minor errors

* changed config

* added deepspeed config

* added more training config to train bash

* adding fix for wandb tags and distributed ranks

* added fastchat data to replicate training for 2k

* tyring to replicate fastchat as close as possible

* before merging

* changed finetue scripts for better performance

* added new data

* example bash

* example bash for mistral