[Misc] Add SPDX-FileCopyrightText (#19100)

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

tests/quantization/test_quark.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 """Test model set-up and weight loading for quark-quantized models.
 
 Run `pytest tests/quantization/test_quark.py`.

tests/quantization/test_register_quantization_config.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 """Tests register custom quantization config.
 
 See https://github.com/vllm-project/vllm/issues/11926 for more details.

tests/quantization/test_torchao.py

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

tests/quantization/utils.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 
 from vllm.model_executor.layers.quantization import get_quantization_config
 from vllm.platforms import current_platform

tests/reasoning/test_deepseekr1_reasoning_parser.py

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

tests/reasoning/test_granite_reasoning_parser.py

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

tests/reasoning/test_qwen3_reasoning_parser.py

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

tests/reasoning/utils.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 
 from typing import Optional, Union
 

tests/runai_model_streamer_test/test_runai_model_streamer_loader.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 
 from vllm import SamplingParams
 from vllm.config import LoadConfig, LoadFormat

tests/runai_model_streamer_test/test_weight_utils.py

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

tests/samplers/test_beam_search.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 """Compare the outputs of HF and vLLM when using beam search.
 
 Run `pytest tests/samplers/test_beam_search.py`.

tests/samplers/test_ignore_eos.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 """Make sure ignore_eos works.
 
 Run `pytest tests/samplers/test_ignore_eos.py`.

tests/samplers/test_logits_processor.py

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

tests/samplers/test_logprobs.py

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

tests/samplers/test_no_bad_words.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 """Make sure bad_words works.
 
 Run `pytest tests/samplers/test_no_bad_words.py`.

tests/samplers/test_ranks.py

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

tests/samplers/test_rejection_sampler.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 """Tests for rejection sampling."""
 
 import pytest

tests/samplers/test_sampler.py

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

tests/samplers/test_seeded_generate.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 """Verify that seeded random sampling is deterministic.
 
 Run `pytest tests/samplers/test_seeded_generate.py`.

tests/samplers/test_typical_acceptance_sampler.py

 # SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 """Tests for rejection sampling."""
 
 import pytest