transformers gguf mistral instruct bggpt insait llama-cpp gguf-my-repo text-generation bg en base_model:INSAIT-Institute/BgGPT-7B-Instruct-v0.2 base_model:quantized:INSAIT-Institute/BgGPT-7B-Instruct-v0.2 license:other endpoints_compatible region:us conversational