transformers gguf merge mergekit lazymergekit FuseAI/FuseChat-7B-VaRM MediaTek-Research/Breeze-7B-Instruct-v1_0 tokyotech-llm/Swallow-MS-7b-v0.1 en base_model:Virt-io/FMT-v1 base_model:quantized:Virt-io/FMT-v1 endpoints_compatible region:us conversational