[Misc] Add SPDX-FileCopyrightText (#19100)

Signed-off-by: simon-mo <simon.mo@hey.com>

examples/others/lmcache/cpu_offload_lmcache.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 """
 This file demonstrates the example usage of cpu offloading
 with LMCache in vLLM v1 or v0.

examples/others/lmcache/disagg_prefill_lmcache_v0.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 """
 This file demonstrates the example usage of disaggregated prefilling
 with LMCache.

examples/others/lmcache/disagg_prefill_lmcache_v1/disagg_proxy_server.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 
 import argparse
 import os

examples/others/lmcache/kv_cache_sharing_lmcache_v1.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 """
 This file demonstrates the example usage of remote KV cache sharing
 with LMCache.

examples/others/tensorize_vllm_model.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 
 import argparse
 import dataclasses

find_cuda_init.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 
 import importlib
 import traceback

setup.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 
 import ctypes
 import importlib.util

tests/async_engine/api_server_async_engine.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 """vllm.entrypoints.api_server with some extra logging for testing."""
 from collections.abc import Iterable
 from typing import Any

tests/async_engine/conftest.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 import pytest
 
 

tests/async_engine/test_api_server.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 
 import os
 import subprocess

tests/async_engine/test_async_llm_engine.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 
 import asyncio
 import os

tests/async_engine/test_request_tracker.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 
 import pytest
 

tests/basic_correctness/test_basic_correctness.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 """Compare the short outputs of HF and vLLM when using greedy sampling.
 
 Run `pytest tests/basic_correctness/test_basic_correctness.py`.

tests/basic_correctness/test_chunked_prefill.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 """Compare the outputs of HF and vLLM when using greedy sampling.
 
 It tests chunked prefill. Chunked prefill can be enabled by

tests/basic_correctness/test_cpu_offload.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 
 from ..utils import compare_two_settings
 

tests/basic_correctness/test_cumem.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 
 import pytest
 import torch

tests/basic_correctness/test_preemption.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 """Compare the short outputs of HF and vLLM when using greedy sampling.
 
 VLLM_TEST_ENABLE_ARTIFICIAL_PREEMPT=1 has to be set before running this test.

tests/benchmarks/test_latency_cli.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 import subprocess
 
 import pytest

tests/benchmarks/test_serve_cli.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 import subprocess
 
 import pytest

tests/benchmarks/test_throughput_cli.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 import subprocess
 
 import pytest