docs(Form): add storybook story

packages/vkui/src/components/Form/Form.stories.tsx

@@ -0,0 +1,47 @@
+import React from 'react';
+import { Meta, Story } from '@storybook/react';
+import { withSinglePanel, withVKUILayout } from '../../storybook/VKUIDecorators';
+import { CanvasFullLayout, DisableCartesianParam } from '../../storybook/constants';
+import { Button } from '../Button/Button';
+import { FormItem } from '../FormItem/FormItem';
+import { Group } from '../Group/Group';
+import { Input } from '../Input/Input';
+import { Form, FormProps } from './Form';
+
+const story: Meta<FormProps> = {
+  title: 'Forms/Form',
+  component: Form,
+  parameters: { ...CanvasFullLayout, ...DisableCartesianParam },
+};
+
+export default story;
+
+const Template: Story<FormProps> = (props) => (
+  <Form {...props}>
+    <FormItem top="Пароль">
+      <Input type="password" placeholder="Введите пароль" />
+    </FormItem>
+    <FormItem>
+      <Button type="submit" size="l">
+        Сохранить
+      </Button>
+    </FormItem>
+  </Form>
+);
+
+export const Playground = Template.bind({});
+Playground.args = {
+  preventDefault: true,
+  onSubmit: () => {
+    console.log('Форма сохранена!');
+  },
+};
+Playground.decorators = [
+  (Component, context) => (
+    <Group>
+      <Component {...context.args} />
+    </Group>
+  ),
+  withSinglePanel,
+  withVKUILayout,
+];