chore: import upstream snapshot with attribution

examples/app/llm/sglang.sh

@@ -0,0 +1,7 @@
+# test_env: pip install "sglang[all]==0.4.6.*" -U
+CUDA_VISIBLE_DEVICES=0 swift app \
+    --model Qwen/Qwen2.5-7B-Instruct \
+    --stream true \
+    --infer_backend sglang \
+    --max_new_tokens 2048 \
+    --lang zh

examples/app/llm/vllm.sh

@@ -0,0 +1,8 @@
+CUDA_VISIBLE_DEVICES=0 swift app \
+    --model Qwen/Qwen2.5-7B-Instruct \
+    --stream true \
+    --infer_backend vllm \
+    --max_new_tokens 2048 \
+    --vllm_gpu_memory_utilization 0.9 \
+    --vllm_max_model_len 8192 \
+    --lang zh