transformers safetensors mixtral text-generation UNA juanako MoE conversational en base_model:fblgit/UNAversal-8x7B-v1beta base_model:quantized:fblgit/UNAversal-8x7B-v1beta license:cc-by-nc-sa-4.0 autotrain_compatible text-generation-inference 4-bit gptq region:us