chore: add docs for icon button

Author: eshankvaish

src/Shared/Components/Button/Button.component.tsx

@@ -114,6 +114,11 @@ const ButtonElement = ({
  * ```tsx
  * <Button component={ButtonComponentType.link} linkProps={{ to: '#' }} />
  * ```
+ *
+ * @example Icon button
+ * ```tsx
+ * <Button icon={<ICCube />} ariaLabel="Label" />
+ * ```
  */
 const Button = ({
     dataTestId,

src/Shared/Components/Button/types.ts

@@ -119,7 +119,14 @@ export type ButtonProps = (
               endIcon?: ReactElement
           }
         | {
+              /**
+               * If provided, icon button is rendered
+               */
               icon: ReactElement
+              /**
+               * Label for the icon button for accessibility.
+               * Shown on hover in tooltip if tippy is not provided explicitly
+               */
               ariaLabel: string
               text?: never
               startIcon?: never