transformers safetensors qwen2 text-generation mergekit merge qwen2.5 TIES conversational en arxiv:2306.01708 arxiv:2407.10671 base_model:Qwen/Qwen2.5-7B base_model:merge:Qwen/Qwen2.5-7B base_model:Qwen/Qwen2.5-7B-Instruct base_model:merge:Qwen/Qwen2.5-7B-Instruct license:apache-2.0 model-index autotrain_compatible text-generation-inference endpoints_compatible region:us