chore: setup storybook

apps/web/stories/Button.tsx

@@ -0,0 +1,52 @@
+import React from 'react';
+import './button.css';
+
+interface ButtonProps {
+  /**
+   * Is this the principal call to action on the page?
+   */
+  primary?: boolean;
+  /**
+   * What background color to use
+   */
+  backgroundColor?: string;
+  /**
+   * How large should the button be?
+   */
+  size?: 'small' | 'medium' | 'large';
+  /**
+   * Button contents
+   */
+  label: string;
+  /**
+   * Optional click handler
+   */
+  onClick?: () => void;
+}
+
+/**
+ * Primary UI component for user interaction
+ */
+export const Button = ({
+  primary = false,
+  size = 'medium',
+  backgroundColor,
+  label,
+  ...props
+}: ButtonProps) => {
+  const mode = primary ? 'storybook-button--primary' : 'storybook-button--secondary';
+  return (
+    <button
+      type="button"
+      className={['storybook-button', `storybook-button--${size}`, mode].join(' ')}
+      {...props}
+    >
+      {label}
+      <style jsx>{`
+        button {
+          background-color: ${backgroundColor};
+        }
+      `}</style>
+    </button>
+  );
+};