Description:
    Generate all necessary boilerplate to render a page using React.
    NOTE: for a new module, it will be necessary to add it to name_mapper in .flowconfig otherwise types won't work.

Example:
    rails generate react_page Index --module Users

    This will create:
        app/views/index.html.slim
        app/javascript/packs/Users/index.js
        app/javascript/src/Users/components/IndexPage.jsx
        app/javascript/src/Users/components/IndexPage.scss
        spec/javascripts/Users/components/IndexPage.spec.scss
