Refactor ExpansionSet and its subclasses (#8382)

* Don't purge cards-by-rarity cache between tournaments

* Move DOM and WAR specific checks out of base ExpansionSet class

* Move Battlebond specific methods out of base ExpansionSet class

* Refactor ExpansionSet and subclasses

* Zendikar boosters also only have full-art basic lands

* Fix Eldritch Moon (#8171)

Mage/src/main/java/mage/game/draft/RichManCubeBoosterDraft.java

@@ -36,7 +36,6 @@ public class RichManCubeBoosterDraft extends DraftImpl {
             }
             boosterNum++;
         }
-        resetBufferedCards();
         this.fireEndDraftEvent();
     }