Basic groundwork for extra decks (contraptions, attractions) (#10378)

* extra deck cards not counted in deck size

* extra deck handling in deckbuilder

* move responsibility for extraDeckCard boolean to CardImpl

* remove redundant field copy

Mage/src/main/java/mage/cards/Card.java

@@ -80,6 +80,13 @@ public interface Card extends MageObject {
         return null;
     }
 
+    /**
+     * Is this an extra deck card? (such as contraptions and attractions)
+     * @return true if this is an extra deck card, false otherwise
+     */
+    default boolean isExtraDeckCard() {
+        return false;
+    }
     void assignNewId();
 
     void addInfo(String key, String value, Game game);