feat: add category registration system to admin

src/main/java/fr/titionfire/ffsaf/data/model/CompetitionModel.java

@@ -58,6 +58,8 @@ public class CompetitionModel {
     @OneToMany(mappedBy = "competition", fetch = FetchType.LAZY, cascade = CascadeType.ALL)
     List<CompetitionGuestModel> guests = new ArrayList<>();
 
+    @OneToMany(mappedBy = "competition", fetch = FetchType.LAZY, cascade = CascadeType.PERSIST)
+    List<CatPresetModel> catPreset = new ArrayList<>();
 
     List<Long> banMembre = new ArrayList<>();