slight changes to package structure + naming

src/main/java/mops/gruppen2/domain/User.java

@@ -0,0 +1,14 @@
+package mops.gruppen2.domain;
+
+import lombok.Data;
+
+import java.util.List;
+
+@Data
+public class User {
+	String id;
+	String vorname;
+	String nachname;
+	String email;
+	List<Group> gruppen;
+}