- Added new translation keys for "Annotation", "Brush color", and "Brush width" in English and Chinese locale files.
- Implemented AnnotationDialog component for users to select brush color and width for annotations.
- Integrated AnnotationDialog into the Reader component, allowing users to toggle its visibility.
- Updated Redux store to manage the state of the annotation dialog and its visibility.
- Created styles for the annotation dialog to enhance user experience.
