Multiple Points Options

I came across this issue as I'm also in need of this functionality, so I had a look around and I believe I've found a simple fix. In this patch (and in the Merge Request in GitLab) the submitted value is stored in $element['#number_of_points'] (which also fixes issue 3427787 🐛 Number of points is not saved Needs work ) and then QuizResults use it to increment the total and earned points.