feat(reader): add PDF reading support with outline chapters, CLI blocks, and noise filtering (task 7)

app/vendor/pypdf/annotations/__init__.py

@@ -0,0 +1,42 @@
+"""
+PDF specifies several annotation types which pypdf makes available here.
+
+The names of the annotations and their attributes do not reflect the names in
+the specification in all cases. For example, the PDF standard defines a
+'Square' annotation that does not actually need to be square. For this reason,
+pypdf calls it 'Rectangle'.
+
+At their core, all annotation types are DictionaryObjects. That means if pypdf
+does not implement a feature, users can easily extend the given functionality.
+"""
+
+
+from ._base import NO_FLAGS, AnnotationDictionary
+from ._markup_annotations import (
+    Ellipse,
+    FreeText,
+    Highlight,
+    Line,
+    MarkupAnnotation,
+    Polygon,
+    PolyLine,
+    Rectangle,
+    Text,
+)
+from ._non_markup_annotations import Link, Popup
+
+__all__ = [
+    "NO_FLAGS",
+    "AnnotationDictionary",
+    "Ellipse",
+    "FreeText",
+    "Highlight",
+    "Line",
+    "Link",
+    "MarkupAnnotation",
+    "PolyLine",
+    "Polygon",
+    "Popup",
+    "Rectangle",
+    "Text",
+]