transformers gguf merge mergekit lazymergekit KoboldAI/Mistral-7B-Erebus-v3 KoboldAI/Mistral-7B-Holodeck-1 en base_model:Virt-io/Erebus-Holodeck-7B base_model:quantized:Virt-io/Erebus-Holodeck-7B endpoints_compatible region:us