feat(tools): create ui-components package and setup Storybook (#41920)

* feat(client): basic Storybook setup

* Revert "feat(client): basic Storybook setup"

This reverts commit f55e249326.

* feat(tools): create ui-components package and setup Storybook

* Add ui-components to lerna.json

tools/ui-components/src/button.js

@@ -0,0 +1,38 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+
+import './button.css';
+
+/**
+ * Primary UI component for user interaction
+ */
+export const Button = ({
+  primary = false,
+  size = 'medium',
+  backgroundColor,
+  label,
+  ...props
+}) => {
+  const mode = primary
+    ? 'storybook-button--primary'
+    : 'storybook-button--secondary';
+  return (
+    <button
+      className={['storybook-button', `storybook-button--${size}`, mode].join(
+        ' '
+      )}
+      style={{ backgroundColor }}
+      type='button'
+      {...props}
+    >
+      {label}
+    </button>
+  );
+};
+
+Button.propTypes = {
+  backgroundColor: PropTypes.string,
+  label: PropTypes.string,
+  primary: PropTypes.bool,
+  size: PropTypes.string
+};