transformers safetensors qwen2 text-generation unsloth conversational en arxiv:2409.12186 arxiv:2309.00071 base_model:Qwen/Qwen2.5-Coder-7B-Instruct base_model:quantized:Qwen/Qwen2.5-Coder-7B-Instruct license:apache-2.0 autotrain_compatible text-generation-inference endpoints_compatible 4-bit bitsandbytes region:us