Create "Open in Stackblitz" option in Storybook Canvas

[guidari]

After this PR is merged we can start adding the "Option in Storybook" to a few stories.

We just have to add the prop additionalActions to Canvas.

<Canvas
  of={ButtonStories.IconButton}
  additionalActions={[
    {
      title: 'Open in Stackblitz',
      onClick: () => stackblitzPrefillConfig(ButtonStories.IconButton),
    },
  ]}
/>

Not all stories will have this option.