Closes: BS-3364
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
- **New Features**
- Introduced a new "Page Dragging Area" widget, enabling enhanced block selection and drag area detection within the user interface.
- Added utilities for more precise block selection based on rectangular selection areas.
- **Improvements**
- Integrated the new widget into the view extension system for consistent behavior across supported views.
- Enhanced clipboard handling with comprehensive adapter configurations for various data types.
- **Refactor**
- Streamlined widget registration and block selection logic for improved maintainability and modularity.
- Removed legacy widget exports and registrations to centralize widget management.
- **Chores**
- Updated workspace and TypeScript configurations to support the new widget module.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
