3.7 add prestige-based requirements

src/main/java/sh/okx/rankup/requirements/DeductibleRequirement.java

@@ -9,6 +9,8 @@ public interface DeductibleRequirement {
    * You can assume that <code>Requirement#check(Player)</code> has been called,
    * and has returned true immediately prior to this.
    *
+   * Currently the multiplier will always be 1, but that may change in the future.
+   *
    * @param player the player to take from
    * @param multiplier The multiplier for the value
    */