feat: auto fill certificate fields on add licence

src/main/java/fr/titionfire/ffsaf/utils/Utils.java

@@ -119,6 +119,15 @@ public class Utils {
         }
     }
 
+    public static Calendar getFirstDateOfSaison() {
+        Calendar calendar = Calendar.getInstance();
+
+        calendar.set(getSaison(), Calendar.SEPTEMBER, 1, 0, 0, 0);
+        calendar.set(Calendar.MILLISECOND, 0);
+
+        return calendar;
+    }
+
     public static Calendar toCalendar(Date date) {
         Calendar cal = Calendar.getInstance();
         cal.setTime(date);