Rectangle Scissors Tool
How to set up the RectangleScissors tool:
// Init cornerstone tools
cornerstoneTools.init();
// Enable any elements, and display images
// ...
// Add our tool, and set it's mode
const RectangleScissorsTool = cornerstoneTools.RectangleScissorsTool;
cornerstoneTools.addTool(RectangleScissorsTool)
cornerstoneTools.setToolActive('RectangleScissors', { mouseButtonMask: 1 })