Move LoadConfig from config/__init__.py to config/load.py (#24566)

Signed-off-by: Harry Mellor <19981378+hmellor@users.noreply.github.com>

vllm/model_executor/model_loader/bitsandbytes_loader.py

@@ -16,7 +16,8 @@ from packaging import version
 from torch import nn
 from transformers.utils import SAFE_WEIGHTS_INDEX_NAME
 
-from vllm.config import LoadConfig, ModelConfig
+from vllm.config import ModelConfig
+from vllm.config.load import LoadConfig
 from vllm.distributed import (get_tensor_model_parallel_rank,
                               get_tensor_model_parallel_world_size)
 # yapf: enable