Add "Undo" functionality

Often, I'll realize right after creating a component that I did it wrong.

Maybe I meant to make a functional component, but forgot the flag. Maybe I realized it has the wrong name (or I typo'ed the name).

Right now the solution is rm -rf src/components/ThingYouJustCreated, which is a little burdensome, and I worry I might make a mistake with that and delete the wrong thing.

I think it'd be neat if you could do:

$ new-component-undo

This will delete the component 'ThingYouJustCreated`. 
Press enter to continue, or any other key to cancel.