Add model_type to gguf utility

Author: Galunid

gguf-py/gguf/utility.py

@@ -50,7 +50,7 @@ def size_label(total_params: int, shared_params: int, expert_params: int, expert
     return size_class
 
 
-def naming_convention(model_name: str | None, base_name: str | None, finetune_string: str | None, version_string: str | None, size_label: str | None, output_type: str | None, model_type: Literal['vocab', 'LoRA'] | None = None) -> str:
+def naming_convention(model_name: str | None, base_name: str | None, finetune_string: str | None, version_string: str | None, size_label: str | None, output_type: str | None, model_type: Literal['vocab', 'LoRA', 'mmproj'] | None = None) -> str:
     # Reference: https://github.com/ggml-org/ggml/blob/master/docs/gguf.md#gguf-naming-convention
 
     if base_name is not None: