Etch-a-Sketch app built with React and TypeScript

Features:

1. Use the mouse to draw on the canvas in upto 10 shades of black.
2. Click the 'Eraser' button to toggle erasing mode that gradually removes shades of the color. Click it again to switch back to drawing mode.
3. Click the 'Toggle Grid Lines' to toggle the lines on the canvas on and off.
4. Drag the slider to adjust the canvas size from 16x16 upto 100x100.
5. Click the 'Clear' button to clear the canvas and start from scratch.