📝(doc) create a global category for Components

This way we ensure that the main categories of the Storybook docs
are well separated, improving readability.

packages/react/src/components/Button/index.stories.tsx

@@ -3,7 +3,7 @@ import React from "react";
 import { Button } from "./index";
 
 export default {
-  title: "Button",
+  title: "Components/Button",
   component: Button,
 } as ComponentMeta<typeof Button>;