gguf merge mergekit Nexusflow/Starling-LM-7B-beta FuseAI/FuseChat-7B-VaRM llama-cpp text-generation base_model:FuseAI/FuseChat-7B-VaRM base_model:merge:FuseAI/FuseChat-7B-VaRM base_model:Nexusflow/Starling-LM-7B-beta base_model:merge:Nexusflow/Starling-LM-7B-beta license:apache-2.0 endpoints_compatible region:us conversational