[Misc] Add SPDX-License-Identifier headers to python source files (#12628)

- **Add SPDX license headers to python source files**
- **Check for SPDX headers using pre-commit**

commit 9d7ef44c3cfb72ca4c32e1c677d99259d10d4745
Author: Russell Bryant <rbryant@redhat.com>
Date:   Fri Jan 31 14:18:24 2025 -0500

    Add SPDX license headers to python source files
    
This commit adds SPDX license headers to python source files as
recommended to
the project by the Linux Foundation. These headers provide a concise way
that is
both human and machine readable for communicating license information
for each
source file. It helps avoid any ambiguity about the license of the code
and can
    also be easily used by tools to help manage license compliance.
    
The Linux Foundation runs license scans against the codebase to help
ensure
    we are in compliance with the licenses of the code we use, including
dependencies. Having these headers in place helps that tool do its job.
    
    More information can be found on ...

vllm/model_executor/models/qwen2_moe.py

+# SPDX-License-Identifier: Apache-2.0
+
 # Adapted from
 # https://github.com/huggingface/transformers/blob/v4.28.0/src/transformers/models/qwen2_moe/modeling_qwen2_moe.py
 # Copyright 2024 The Qwen team.

vllm/model_executor/models/qwen2_rm.py

+# SPDX-License-Identifier: Apache-2.0
+
 # Adapted from
 # https://huggingface.co/Qwen/Qwen2.5-Math-RM-72B/blob/main/modeling_qwen2_rm.py
 # Copyright 2024 The Qwen team.

vllm/model_executor/models/qwen2_vl.py

+# SPDX-License-Identifier: Apache-2.0
+
 # Adapted from
 # https://github.com/huggingface/transformers/blob/19e6e80e10118f855137b90740936c0b11ac397f/src/transformers/models/qwen2_vl/modeling_qwen2_vl.py
 # Copyright 2024 The Qwen team.

vllm/model_executor/models/registry.py

+# SPDX-License-Identifier: Apache-2.0
 """
 Whenever you add an architecture to this page, please also update
 `tests/models/registry.py` with example HuggingFace models for it.

vllm/model_executor/models/roberta.py

+# SPDX-License-Identifier: Apache-2.0
+
 import itertools
 from typing import Iterable, List, Optional, Tuple
 

vllm/model_executor/models/siglip.py

+# SPDX-License-Identifier: Apache-2.0
 """Implementation of SiglipVisionModel intended to be only used
 within a vision language model."""
 

vllm/model_executor/models/solar.py

+# SPDX-License-Identifier: Apache-2.0
+
 # Adapted from
 # https://github.com/huggingface/transformers/blob/v4.28.0/src/transformers/models/llama/modeling_llama.py
 # Copyright 2023 The vLLM team.

vllm/model_executor/models/stablelm.py

+# SPDX-License-Identifier: Apache-2.0
+
 # Copyright 2023 Stability AI, EleutherAI, and The HuggingFace Inc. team.
 # All rights reserved.
 #

vllm/model_executor/models/starcoder2.py

+# SPDX-License-Identifier: Apache-2.0
+
 # Copyright 2024 BigCode and the HuggingFace Inc. team. All rights reserved.
 #
 # This code is based on EleutherAI's GPT-NeoX library and the GPT-NeoX

vllm/model_executor/models/telechat2.py

+# SPDX-License-Identifier: Apache-2.0
+
 # Copyright 2023 The vLLM team.
 # Copyright 2022 EleutherAI and the HuggingFace Inc. team. All rights reserved.
 #

vllm/model_executor/models/ultravox.py

+# SPDX-License-Identifier: Apache-2.0
+
 # Adapted from https://github.com/fixie-ai/ultravox/blob/ecd58c4041030bae2ad15aa6bcf04ab43199ea02/ultravox/model/ultravox_model.py
 """PyTorch Ultravox model."""
 import math

vllm/model_executor/models/utils.py

+# SPDX-License-Identifier: Apache-2.0
+
 import itertools
 from dataclasses import dataclass, field
 from typing import (Callable, Dict, Iterable, List, Literal, Mapping, Optional,

vllm/model_executor/models/vision.py

+# SPDX-License-Identifier: Apache-2.0
+
 from abc import ABC, abstractmethod
 from typing import Final, Generic, Optional, Protocol, TypeVar, Union
 

vllm/model_executor/models/whisper.py

+# SPDX-License-Identifier: Apache-2.0
+
 import math
 from typing import (Iterable, List, Mapping, Optional, Set, Tuple, TypedDict,
                     Union)

vllm/model_executor/parameter.py

+# SPDX-License-Identifier: Apache-2.0
+
 from fractions import Fraction
 from typing import Callable, Optional, Union
 

vllm/model_executor/pooling_metadata.py

+# SPDX-License-Identifier: Apache-2.0
+
 from dataclasses import dataclass
 from typing import Any, Dict, List, Tuple
 

vllm/model_executor/sampling_metadata.py

+# SPDX-License-Identifier: Apache-2.0
+
 from array import array
 from dataclasses import dataclass
 from typing import Dict, List, Optional, Tuple

vllm/model_executor/utils.py

+# SPDX-License-Identifier: Apache-2.0
 """Utils for model executor."""
 from typing import Any, Dict, Optional
 

vllm/multimodal/__init__.py

+# SPDX-License-Identifier: Apache-2.0
+
 from .base import MultiModalPlaceholderMap, MultiModalPlugin
 from .hasher import MultiModalHashDict, MultiModalHasher
 from .inputs import (BatchedTensorInputs, ModalityData, MultiModalDataBuiltins,

vllm/multimodal/audio.py

+# SPDX-License-Identifier: Apache-2.0
+
 import base64
 from io import BytesIO
 from pathlib import Path