Pages with route parameters break page registration.

[oddvalue]

This has already been mentioned in #17 but we have a few pages within our application that have route parameters. One possible solution would be to check whether or not the page should register navigation in RegisterPages:

            if ($page::shouldRegisterNavigation() === false) {
                continue;
            }

If having pages that aren't in the navigation is an intended feature of this package then maybe that could be togglable? Or some way to excluded certain pages added?