Please make Form compatible with Storybook

[ianwremmel]

The <Form/> component throws an error if it's not nested under a <RemixRoute />. Unfortunately, <RemixRoute/> throws an error if it's not nested under a <RemixEntry />. <RemixEntry/> requires number of arguments that would be strange to mock for purposes of storybook. Would it be reasonable to export a component that sets up the underlying contexts so that <Form /> can work in Storybook?

[petermekhaeil]

#2481