[FEAT] Support GGUF format (#2215)

Co-authored-by: Yang Zheng(SW)(Alex) <you@example.com>

python/sglang/srt/models/gpt_bigcode.py

@@ -271,7 +271,7 @@ class GPTBigCodeForCausalLM(nn.Module):
     ) -> torch.Tensor:
         hidden_states = self.transformer(input_ids, positions, forward_batch)
         return self.logits_processor(
-            input_ids, hidden_states, self.lm_head.weight, forward_batch
+            input_ids, hidden_states, self.lm_head, forward_batch
         )
 
     def load_weights(self, weights: Iterable[Tuple[str, torch.Tensor]]):