Define Custom Cursor for "On-Drawing" State

# Description
We need to implement a custom cursor that will be displayed while the user is in the process of drawing on the canvas. This enhancement will improve the user experience by providing a visual indication of the drawing action.

## Current Behavior
Currently, the cursor does not change when the user starts drawing on the canvas.

## Expected Behavior
When the user is actively drawing on the canvas, a custom cursor (e.g., a pencil or brush icon) should be displayed. This cursor should clearly indicate that the drawing action is in progress.