Add an interactive mode for the component generator

[NullVoxPopuli]

Let's say you want to place a component in a sub-route.
You'd do this today:

$ react g component header --route=dashboard/generators/show
installing component
  create src/ui/routes/dashboard/generators/show/-components/header/__tests__/page.ts
  create src/ui/routes/dashboard/generators/show/-components/header/__tests__/rendering-test.ts
  create src/ui/routes/dashboard/generators/show/-components/header/index.tsx
  create src/ui/routes/dashboard/generators/show/-components/header/styles.scss

what if you didn't trust your self to type the --route param correctly?

there should be an "interactive" mode for specifying the route flag.

it should be triggered when --route is present, but has no value.

it should use inquirer to allow you to crawl the routes folder and build the path via the Terminal UI.

when finishing, it should print the command it's about to run, and ask you to confirm before actually running.

[NullVoxPopuli]

or, we just use an --interactive flag, and start with asking if we want to place the component in the routes folder, or the components folder.