transformers safetensors llama text-generation alignment-handbook trl sft generated_from_trainer conversational dataset:HuggingFaceH4/ultrachat_200k base_model:codellama/CodeLlama-7b-Instruct-hf base_model:finetune:codellama/CodeLlama-7b-Instruct-hf license:llama2 autotrain_compatible text-generation-inference endpoints_compatible region:us