Add hasNot to redirects

[corysimmons]

Describe the feature you'd like to request

I'd love to be able to redirect people to a login page if hasNot: someAuthCookieKey...

has exists.

Describe the solution you'd like

Add a hasNot or just allow full-blown regex matching instead of only being able to match after xyz.

Describe alternatives you've considered

You can redirect from within the app, but I'm always torn about whether I should use next.config.js to do redirects or just manually do them from within the app. It feels like the next.config.js approach is better/faster, but running into weird things like this make me want to delete it and just roll everything from within components. :(

From googling this seems like a pretty common request where people are just like "It's not available. 🤷‍♂️" and it also seems pretty easy to add.