Add default exports and format radiobutton files

src/components/radio/index.ts

@@ -0,0 +1,4 @@
+import RadioButton from "./button/RadioButton";
+import RadioButtonGroup from "./group/RadioButtonGroup";
+
+export default { RadioButton, RadioButtonGroup };

src/stories/RadioButtonGroup.stories.tsx

@@ -1,5 +1,4 @@
 import React from "react";
-
 import { ComponentStory, ComponentMeta } from "@storybook/react";
 
 import RadioButtonGroup from "../components/radio/group/RadioButtonGroup";
@@ -8,13 +7,15 @@ import RadioButton from "../components/radio/button/RadioButton";
 export default {
   title: "Radio button group",
   component: RadioButtonGroup,
-  argTypes: { onSelection: { action: "select" }, value: {type: "string"} },
+  argTypes: { onSelection: { action: "select" }, value: { type: "string" } },
 } as ComponentMeta<typeof RadioButtonGroup>;
 
-const Template: ComponentStory<typeof RadioButtonGroup> = (args) => <RadioButtonGroup {...args}>
+const Template: ComponentStory<typeof RadioButtonGroup> = (args) => (
+  <RadioButtonGroup {...args}>
     <RadioButton value="one" label="First option" />
     <RadioButton value="two" label="Second option" />
-</RadioButtonGroup>;
+  </RadioButtonGroup>
+);
 
 export const DefaultInput = Template.bind({});
 
@@ -22,4 +23,4 @@ DefaultInput.args = {
   value: undefined,
   defaultValue: "two",
   disabled: false,
-}
+};