add GruppenService and EventRepository and Event object

src/main/java/mops/gruppen2/DTO/Event.java

@@ -0,0 +1,4 @@
+package mops.gruppen2.DTO;
+
+public class Event {
+}

src/main/java/mops/gruppen2/entities/GruppeRepository.java

@@ -1,6 +0,0 @@
-package mops.gruppen2.entities;
-
-import org.springframework.data.repository.CrudRepository;
-
-public interface GruppeRepository extends CrudRepository<Gruppe,Long> {
-}

src/main/java/mops/gruppen2/entities/TeilnehmerRepository.java

@@ -1,6 +0,0 @@
-package mops.gruppen2.entities;
-
-import org.springframework.data.repository.CrudRepository;
-
-public interface TeilnehmerRepository extends CrudRepository<Teilnehmer,Long> {
-}

src/main/java/mops/gruppen2/repositories/EventRepository.java

@@ -0,0 +1,7 @@
+package mops.gruppen2.repositories;
+
+import mops.gruppen2.DTO.Event;
+import org.springframework.data.repository.CrudRepository;
+
+public interface EventRepository extends CrudRepository<Event, Long> {
+}

src/main/java/mops/gruppen2/services/GruppenService.java

@@ -0,0 +1,10 @@
+package mops.gruppen2.services;
+
+import mops.gruppen2.repositories.EventRepository;
+
+public class GruppenService {
+
+	public GruppenService(EventRepository eventRepository){
+		
+	}
+}