transformers gguf merge mergekit lazymergekit FuseAI/FuseChat-7B-VaRM occiglot/occiglot-7b-eu5-instruct INSAIT-Institute/BgGPT-7B-Instruct-v0.2 en base_model:Virt-io/FMT-v2 base_model:quantized:Virt-io/FMT-v2 endpoints_compatible region:us conversational