[5.2] Add response method throwResponse()

[vlakoff]

Here is the use case:

Before:

use Illuminate\Http\Exception\HttpResponseException;

throw new HttpResponseException(redirect()->refresh(303));

After:

redirect()->refresh(303)->throwResponse();

[GrahamCampbell]

You can only throw 4xx or 5xx. Throwing other responses is a massive hack.

[vlakoff]

I'm just looking for a way to immediately trigger response (ideally with session saving, etc.), without having to propagate return values all the way up to the controller entry method.

[vlakoff]

Thanks for accepting. Have I already said the terminable middlewares are amazing?