gguf merge mergekit lazymergekit Weyaxi/Einstein-v4-7B Locutusque/Hercules-3.1-Mistral-7B base_model:Locutusque/Hercules-3.1-Mistral-7B base_model:merge:Locutusque/Hercules-3.1-Mistral-7B base_model:Weyaxi/Einstein-v4-7B base_model:merge:Weyaxi/Einstein-v4-7B endpoints_compatible region:us conversational