Update Developer.java

Adding relationship for developer

final project/database/src/main/java/pl/dmss/vmaneliuk/database/model/Developer.java

@@ -18,4 +18,8 @@ public class Developer {
     private String contactEmail;
 
     private String website;
+
+    // One developer can publish many games
+    @OneToMany(mappedBy = "developer", cascade = CascadeType.ALL, orphanRemoval = true)
+    private List<Game> games;
 }