[11.x] Add withQuery, withoutQuery methods to redirect response

[iamgergo]

Sometimes it would be great to have the ability to manage query strings on the redirect response, like the fragment.

This PR allows to add, remove, replace query string parameters (even nested) on the target URL.

$url = '/login?loggedout=true';

$response = Redirect::to($url)
    ->withQuery(['status' => 'success'])
    ->withFragment('oauth-box')
    ->withoutQuery('loggedout');

$response->getTargetUrl(); // /login?status=success#oauth-box

If this PR accepted, I'll gladly update the docs as well.

[osbre]

I think there is already an alternative approach of passing parameters into the to_route helper second argument

[iamgergo]

Yes, but what if I want to redirect the user to a route without name, or to an external URL?

This solution is more generic than the to_route helper.

[taylorotwell]

Going to hold off on this one for now.