chore: import upstream snapshot with attribution

benchmarks/benchmark_serving.py

@@ -0,0 +1,17 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+import sys
+
+if __name__ == "__main__":
+    print("""DEPRECATED: This script has been moved to the vLLM CLI.
+
+Please use the following command instead:
+    vllm bench serve
+
+For help with the new command, run:
+    vllm bench serve --help
+
+Alternatively, you can run the new command directly with:
+    python -m vllm.entrypoints.cli.main bench serve --help
+""")
+    sys.exit(1)