transformers gguf mergekit merge base_model:Hastagaras/Halu-8B-Llama3-Blackroot base_model:merge:Hastagaras/Halu-8B-Llama3-Blackroot base_model:Sao10K/L3-8B-Stheno-v3.2 base_model:merge:Sao10K/L3-8B-Stheno-v3.2 endpoints_compatible region:us conversational