transformers safetensors qwen2 text-generation chat qwen gptq int4 4bits 110b conversational en arxiv:2309.16609 base_model:Qwen/Qwen1.5-110B-Chat base_model:quantized:Qwen/Qwen1.5-110B-Chat license:other autotrain_compatible text-generation-inference endpoints_compatible 4-bit region:us