- Added Clone Stamp implementation in `clone_tool.rs` for engine API, enabling pixel sampling and painting functionality.
- Introduced a new SVG icon for the Clone Stamp tool.
- Created `clone_tool.rs` in the GUI crate to manage Clone Stamp UI state and interactions.
- Developed `clone_tool_controls.rs` to render Clone Stamp controls, including size, opacity, hardness, and mirroring options.
- Implemented error handling and source status messaging for user feedback in the Clone Stamp workflow.