transformers safetensors gemma text-generation mergekit merge conversational arxiv:2306.01708 base_model:deepnetguy/gemma-105 base_model:merge:deepnetguy/gemma-105 base_model:michaelw37/sn6_models base_model:merge:michaelw37/sn6_models autotrain_compatible text-generation-inference endpoints_compatible region:us