[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 ...

tests/models/decoder_only/language/test_phimoe.py

+# SPDX-License-Identifier: Apache-2.0
 """Compare the outputs of HF and vLLM for moe models using greedy sampling.
 
 Run `pytest tests/models/test_phimoe.py`.

tests/models/decoder_only/vision_language/test_awq.py

+# SPDX-License-Identifier: Apache-2.0
+
 from typing import List, Optional, Type
 
 import pytest

tests/models/decoder_only/vision_language/test_h2ovl.py

+# SPDX-License-Identifier: Apache-2.0
+
 from typing import Optional, Tuple
 
 import pytest

tests/models/decoder_only/vision_language/test_intern_vit.py

+# SPDX-License-Identifier: Apache-2.0
+
 from typing import Optional
 
 import pytest

tests/models/decoder_only/vision_language/test_models.py

+# SPDX-License-Identifier: Apache-2.0
 """Common tests for testing .generate() functionality for single / multiple
 image, embedding, and video support for different VLMs in vLLM.
 """

tests/models/decoder_only/vision_language/test_phi3v.py

+# SPDX-License-Identifier: Apache-2.0
+
 import os
 import re
 from typing import List, Optional, Tuple, Type

tests/models/decoder_only/vision_language/test_pixtral.py

+# SPDX-License-Identifier: Apache-2.0
 """Compare the outputs of HF and vLLM for Mistral models using greedy sampling.
 
 Run `pytest tests/models/test_mistral.py`.

tests/models/decoder_only/vision_language/test_qwen2_vl.py

+# SPDX-License-Identifier: Apache-2.0
+
 from typing import Any, List, Optional, Tuple, Type, TypedDict, Union
 
 import numpy.typing as npt

tests/models/decoder_only/vision_language/vlm_utils/builders.py

+# SPDX-License-Identifier: Apache-2.0
 """Helpers for building inputs that can be leveraged for different test types.
 """
 from pathlib import PosixPath

tests/models/decoder_only/vision_language/vlm_utils/case_filtering.py

+# SPDX-License-Identifier: Apache-2.0
 """Utils for determining which subset of model tests belong to a specific
 modality, getting all combinations (similar to pytest's parametrization),
 handling multimodal placeholder substitution, and so on.

tests/models/decoder_only/vision_language/vlm_utils/core.py

+# SPDX-License-Identifier: Apache-2.0
 """Core test implementation to be shared across modalities."""
 from typing import Any, Callable, Dict, List, Optional, Tuple, Type, Union
 
@@ -153,4 +154,4 @@ def process_runner_outputs(
 def process_outputs(output_processor, model, outputs_per_image):
     """Applies a model specific post-processor function to a runner's output"""
     return [[output_processor(res, model) for res in outputs]
-            for outputs in outputs_per_image]
\ No newline at end of file
+            for outputs in outputs_per_image]

tests/models/decoder_only/vision_language/vlm_utils/custom_inputs.py

+# SPDX-License-Identifier: Apache-2.0
 """Custom input builders for edge-cases in different models."""
 from typing import Callable
 

tests/models/decoder_only/vision_language/vlm_utils/model_utils.py

+# SPDX-License-Identifier: Apache-2.0
 """Common utility functions relating to different models that are useful
 for manipulating the input / output of HF & vLLM test runners, which are
 typically specific to a small subset of models.

tests/models/decoder_only/vision_language/vlm_utils/runners.py

+# SPDX-License-Identifier: Apache-2.0
 """Entrypoints for wrapping the core run_test implementation for specific test
 types / modalities.
 """

tests/models/decoder_only/vision_language/vlm_utils/types.py

+# SPDX-License-Identifier: Apache-2.0
 """Types for writing multimodal model tests."""
 from enum import Enum
 from pathlib import PosixPath

tests/models/embedding/language/test_cls_models.py

+# SPDX-License-Identifier: Apache-2.0
 """Compare the classification outputs of HF and vLLM models.
 
 Run `pytest tests/models/test_cls_models.py`.

tests/models/embedding/language/test_embedding.py

+# SPDX-License-Identifier: Apache-2.0
 """Compare the embedding outputs of HF and vLLM models.
 
 Run `pytest tests/models/embedding/language/test_embedding.py`.

tests/models/embedding/language/test_gritlm.py

+# SPDX-License-Identifier: Apache-2.0
+
 import importlib.util
 import math
 from array import array

tests/models/embedding/language/test_scoring.py

+# SPDX-License-Identifier: Apache-2.0
 """Compare the scoring outputs of HF and vLLM models.
 
 Run `pytest tests/models/embedding/language/test_scoring.py`.

tests/models/embedding/utils.py

+# SPDX-License-Identifier: Apache-2.0
+
 from typing import List, Sequence
 
 import torch