add .isort.cfg (#378)

python/sglang/srt/layers/logits_processor.py

@@ -1,11 +1,12 @@
 import torch
-from sglang.srt.managers.router.model_runner import ForwardMode, InputMetadata
 from torch import nn
 from vllm.model_executor.parallel_utils.communication_op import (
     get_tensor_model_parallel_world_size,
     tensor_model_parallel_all_gather,
 )
 
+from sglang.srt.managers.router.model_runner import ForwardMode, InputMetadata
+
 
 class LogitsProcessor(nn.Module):
     def __init__(self, config):