binding stubs: add missing SPDX header

Also reformatted the stubs with pre-commit run on the
`python:3.12.10-slim-bookworm` image that is also used in the pipeline.

Running pre-commit within the Fedora dev image has different behavior.

Signed-off-by: Kevin Vu te Laar <vu.te@rwth-aachen.de>

Author: Kevin Vu te Laar

python/villas/node/binding.pyi

@@ -1,17 +1,24 @@
+"""
+@generated by mypy (partial). Manual edits applied for function decorators.
+isort:skip_file
+
+Author: Kevin Vu te Laar <vu.te@rwth-aachen.de>
+SPDX-FileCopyrightText: 2014-2025 Institute for Automation of Complex Power Systems, RWTH Aachen University
+SPDX-License-Identifier: Apache-2.0
+"""
+
 from _typeshed import Incomplete
 from typing import Any, Callable
 
 logger: Incomplete
 
-
 class SamplesArray:
     def __init__(self, length: int) -> None: ...
     def __len__(self) -> int: ...
     def __getitem__(self, idx: int | slice): ...
     def __copy__(self) -> None: ...
     def __deepcopy__(self) -> None: ...
 
-
 def _warn_if_not_implemented(
     func: Callable[..., Any],
 ) -> Callable[..., Any]: ...

python/villas/node/python_binding.pyi

@@ -1,11 +1,19 @@
+"""
+@generated by mypy (partial). Manual edits applied for pybind11 binding.
+isort:skip_file
+
+Author: Kevin Vu te Laar <vu.te@rwth-aachen.de>
+SPDX-FileCopyrightText: 2014-2025 Institute for Automation of Complex Power Systems, RWTH Aachen University
+SPDX-License-Identifier: Apache-2.0
+"""
+
 import typing
-from typing import Any, Callable, overload
+from typing import Any, overload
 
 Array = Any
 capsule = Any
 timespec = Any
 
-
 class SamplesArray:
     def __init__(self, len: int) -> None: ...
     def bulk_alloc(self, arg0: int, arg1: int, arg2: int) -> None: ...
@@ -14,7 +22,6 @@ class SamplesArray:
     def __iter__(self) -> typing.Iterator[capsule]: ...
     def __setitem__(self, arg0: int, arg1: capsule) -> None: ...
 
-
 def memory_init(arg0: int) -> int: ...
 def node_check(arg0: capsule) -> int: ...
 def node_destroy(arg0: capsule) -> int: ...