transformers safetensors llama text-generation generated_from_trainer conversational arxiv:2407.09121 base_model:meta-llama/Meta-Llama-3-8B-Instruct base_model:finetune:meta-llama/Meta-Llama-3-8B-Instruct license:apache-2.0 autotrain_compatible text-generation-inference endpoints_compatible region:us