feat: dummy PeerAssessment created

...c/main/java/unipotsdam/gf/interfaces/IPeerAssessment.java

...ipotsdam/gf/modules/assessment/controller/model/Quiz.java

.../modules/assessment/controller/service/AssessmentDAO.java

.../modules/assessment/controller/service/FBAssessement.java

...modules/assessment/controller/service/PeerAssessment.java

...es/assessment/controller/service/PeerAssessmentDummy.java

...tsdam/gf/modules/assessment/controller/view/QuizView.java

...nipotsdam/gf/modules/munchkin/service/RestyMunschkin.java

...a/unipotsdam/gf/modules/assessment/TestAddAssessment.java