transformers gguf mergekit merge base_model:nbeerbower/gemma2-gutenberg-9B base_model:merge:nbeerbower/gemma2-gutenberg-9B base_model:princeton-nlp/gemma-2-9b-it-SimPO base_model:merge:princeton-nlp/gemma-2-9b-it-SimPO license:gemma model-index endpoints_compatible region:us