Add "Undo" functionality

[joshwcomeau]

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.

[morajabi]

I was thinking for something like this: new-component undo. What do you think?

[joshwcomeau]

I was thinking for something like this: new-component undo. What do you think?

Hmm... Yeah, I like that!

The "keyword" is typically the name of the component, but if you wanted to make an undo component, it needs to be capitalized as Undo. So I think a case-sensitive undo command makes sense.

[jelly8173]

You need to be consistent with flags.

In new-component undo the function of undo is to specify a command. Then I can infer that general syntax for utility is like new-component create Something?

I suggest makeing -u flag as an alternative. Usually when you notice error, you still able to reach that terminal, where you issued command to create component, so you can just type ↑ (or ^P) to bring previous command back and add -u flag yielding something like: new-component Something -u.

That way you can be sure that name is consistent with erroneously created one