transformers nemo safetensors mistral text-generation conversational arxiv:2407.14679 arxiv:2406.11704 base_model:nvidia/Mistral-NeMo-Minitron-8B-Base base_model:finetune:nvidia/Mistral-NeMo-Minitron-8B-Base license:other autotrain_compatible text-generation-inference endpoints_compatible region:us