Library MVP (#1787)

Co-authored-by: dwelle <luzar.david@gmail.com>

src/components/ToolButton.tsx

@@ -63,6 +63,11 @@ export const ToolButton = React.forwardRef((props: ToolButtonProps, ref) => {
       >
         <div className="ToolIcon__icon" aria-hidden="true">
           {props.icon || props.label}
+          {props.keyBindingLabel && (
+            <span className="ToolIcon__keybinding">
+              {props.keyBindingLabel}
+            </span>
+          )}
         </div>
         {props.showAriaLabel && (
           <div className="ToolIcon__label">{props["aria-label"]}</div>