feat(component): add storybook (#5079)

packages/frontend/component/src/ui/toast/toast.stories.tsx

@@ -0,0 +1,20 @@
+import { useCallback, useState } from 'react';
+
+import { Button } from '../button';
+import { toast } from '.';
+
+export default {
+  title: 'UI/Toast',
+  component: () => null,
+};
+
+export const Default = () => {
+  const [count, setCount] = useState(1);
+
+  const showToast = useCallback(() => {
+    toast(`Toast ${count}`);
+    setCount(count + 1);
+  }, [count]);
+
+  return <Button onClick={showToast}>Show toast</Button>;
+};