[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 the SPDX site:
    
    - https://spdx.dev/learn/handling-license-info/

Signed-off-by: Russell Bryant <rbryant@redhat.com>

commit 5a1cf1cb3b80759131c73f6a9dddebccac039dea
Author: Russell Bryant <rbryant@redhat.com>
Date:   Fri Jan 31 14:36:32 2025 -0500

    Check for SPDX headers using pre-commit
Signed-off-by: Russell Bryant <rbryant@redhat.com>

---------
Signed-off-by: Russell Bryant <rbryant@redhat.com>

vllm/compilation/pass_manager.py

+# SPDX-License-Identifier: Apache-2.0
+
 from typing import Any, Dict, List
 
 from torch import fx as fx

vllm/compilation/reshapes.py

+# SPDX-License-Identifier: Apache-2.0
+
 from typing import Union
 
 import torch.fx

vllm/compilation/vllm_inductor_pass.py

+# SPDX-License-Identifier: Apache-2.0
+
 import time
 
 import torch

vllm/compilation/wrapper.py

+# SPDX-License-Identifier: Apache-2.0
+
 import os
 import sys
 from abc import abstractmethod

vllm/config.py

+# SPDX-License-Identifier: Apache-2.0
+
 import ast
 import copy
 import enum

vllm/connections.py

+# SPDX-License-Identifier: Apache-2.0
+
 from pathlib import Path
 from typing import Mapping, MutableMapping, Optional
 from urllib.parse import urlparse

vllm/core/block/block_table.py

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

vllm/core/block/common.py

+# SPDX-License-Identifier: Apache-2.0
+
 from collections import deque
 from dataclasses import dataclass
 from typing import Deque, Dict, Iterable, List, Optional, Protocol, Tuple

vllm/core/block/cpu_gpu_block_allocator.py

+# SPDX-License-Identifier: Apache-2.0
+
 from typing import Dict, FrozenSet, List, Optional, Tuple
 
 from vllm.core.block.interfaces import (Block, BlockAllocator, BlockId,

vllm/core/block/interfaces.py

+# SPDX-License-Identifier: Apache-2.0
+
 from abc import ABC, abstractmethod
 from typing import Dict, FrozenSet, List, Optional, Protocol, Tuple
 

vllm/core/block/naive_block.py

+# SPDX-License-Identifier: Apache-2.0
+
 from collections import deque
 from typing import Deque, FrozenSet, Iterable, List, Optional, Tuple, Union
 

vllm/core/block/prefix_caching_block.py

+# SPDX-License-Identifier: Apache-2.0
 """Token blocks."""
 import sys
 from bisect import bisect_left

vllm/core/block/utils.py

+# SPDX-License-Identifier: Apache-2.0
 """Block manager utils."""
 from vllm.sequence import SequenceGroup
 from vllm.utils import (STR_NOT_IMPL_ENC_DEC_PREFIX_CACHE,

vllm/core/block_manager.py

+# SPDX-License-Identifier: Apache-2.0
 """A block manager that manages token blocks."""
 from typing import Dict, List, Optional
 from typing import Sequence as GenericSequence

vllm/core/evictor.py

+# SPDX-License-Identifier: Apache-2.0
+
 import enum
 import heapq
 from abc import ABC, abstractmethod

vllm/core/interfaces.py

+# SPDX-License-Identifier: Apache-2.0
+
 import enum
 from abc import ABC, abstractmethod
 from typing import List

vllm/core/placeholder_block_space_manager.py

+# SPDX-License-Identifier: Apache-2.0
+
 from typing import List, Tuple
 
 from vllm.core.interfaces import AllocStatus, BlockSpaceManager

vllm/core/scheduler.py

+# SPDX-License-Identifier: Apache-2.0
+
 import enum
 import os
 import random

vllm/device_allocator/cumem.py

+# SPDX-License-Identifier: Apache-2.0
+
 # cumem-based pytorch pluggable allocator to implement sleep mode.
 # other approaches tried but failed:
 # - cuda-python package binding

vllm/distributed/__init__.py

+# SPDX-License-Identifier: Apache-2.0
+
 from .communication_op import *
 from .parallel_state import *
 from .utils import *