transformers safetensors qwen2 text-generation mergekit merge krx conversational ko arxiv:2306.01708 base_model:Qwen/Qwen2-7B base_model:merge:Qwen/Qwen2-7B base_model:Qwen/Qwen2-7B-Instruct base_model:merge:Qwen/Qwen2-7B-Instruct license:apache-2.0 autotrain_compatible text-generation-inference endpoints_compatible region:us