Introduce storybooks for all profile pages

packages/app/components/profile/changeUsername/ChangeUsername.story.tsx

@@ -0,0 +1,23 @@
+import React from 'react';
+import { storiesOf } from '@storybook/react';
+import { action } from '@storybook/addon-actions';
+
+import { FormModel } from 'app/components/ui/form';
+import { ProfileLayout } from 'app/components/profile/Profile.story';
+
+import ChangeUsername from './ChangeUsername';
+
+storiesOf('Components/Profile', module).add('ChangeUsername', () => (
+    <ProfileLayout>
+        <ChangeUsername
+            form={new FormModel()}
+            username="InitialUsername"
+            onChange={action('onChange')}
+            onSubmit={(form) => {
+                action('onSubmit')(form);
+
+                return Promise.resolve();
+            }}
+        />
+    </ProfileLayout>
+));