Add 3D visualization feature with PyVista integration
- Add PyVista and pyvistaqt dependencies for 3D rendering
- Implement Workspaces3DView widget for 3D data visualization
- Add 3D context menu option to WorkspacesManager
- Support volume rendering and slice viewing for 3D data
- Add Qt OpenGL context sharing for better 3D performance
Co-Authored-By: Claude noreply@anthropic.com