title: CSS-modules with storybook module not found
body: <p>I've installed in my react project storybook v5. Everything seems to be ok, but when I want to import styles to my react component (I use postcss-modules) I have an error <code>Module not found: Error: Can't resolve './styles/Buttons'</code>. 
  What should I add to storybook config to make it workable? I use babel in my project.</p>