[boolean] Add basic boolean functionality (boolean() and Polygon.boolean())

stubs/pyclipper/__init__.pyi

@@ -0,0 +1,46 @@
+from typing import Any
+from collections.abc import Iterable, Sequence
+import numpy
+from numpy.typing import NDArray
+
+
+# Basic types for Clipper integer coordinates
+Path = Sequence[tuple[int, int]]
+Paths = Sequence[Path]
+
+# Types for input/output floating point coordinates
+FloatPoint = tuple[float, float] | NDArray[numpy.floating]
+FloatPath = Sequence[FloatPoint] | NDArray[numpy.floating]
+FloatPaths = Iterable[FloatPath]
+
+# Constants
+PT_SUBJECT: int
+PT_CLIP: int
+
+PT_UNION: int
+PT_INTERSECTION: int
+PT_DIFFERENCE: int
+PT_XOR: int
+
+PFT_EVENODD: int
+PFT_NONZERO: int
+PFT_POSITIVE: int
+PFT_NEGATIVE: int
+
+# Scaling functions
+def scale_to_clipper(paths: FloatPaths, scale: float = ...) -> Paths: ...
+def scale_from_clipper(paths: Path | Paths, scale: float = ...) -> Any: ...
+
+class PolyNode:
+    Contour: Path
+    Childs: list[PolyNode]
+    Parent: PolyNode
+    IsHole: bool
+
+class Pyclipper:
+    def __init__(self) -> None: ...
+    def AddPath(self, path: Path, poly_type: int, closed: bool) -> None: ...
+    def AddPaths(self, paths: Paths, poly_type: int, closed: bool) -> None: ...
+    def Execute(self, clip_type: int, subj_fill_type: int = ..., clip_fill_type: int = ...) -> Paths: ...
+    def Execute2(self, clip_type: int, subj_fill_type: int = ..., clip_fill_type: int = ...) -> PolyNode: ...
+    def Clear(self) -> None: ...