feat: validate @types packages before installing them

[forivall]

will check if the package exists and is not deprecated

still kinda work in progress, in particular, with the option aliases

[ewgenius]

@forivall good idea, thanks! Are you planning to continue working on it?

[forivall]

I feel like it can be merged as-is, as long as you're fine with the option aliases. I also haven't checked your changes since, so if this needs conflict resolution, i'll be able to do that.

also, the type definition for npm-registry-fetch should be pushed up to DefinitelyTyped

[forivall]

Oh yeah, improve the messages, that was the main thing to add

[forivall]

and to submit the typings to definitely typed