transformers gguf gemma2 instruct bggpt insait bg en base_model:INSAIT-Institute/BgGPT-Gemma-2-2.6B-IT-v1.0 base_model:quantized:INSAIT-Institute/BgGPT-Gemma-2-2.6B-IT-v1.0 license:gemma endpoints_compatible region:us imatrix conversational