add Quest command alias (#1891)

src/main/java/emu/grasscutter/command/commands/QuestCommand.java

@@ -9,7 +9,11 @@ import java.util.List;
 
 import static emu.grasscutter.utils.Language.translate;
 
-@Command(label = "quest", usage = {"(add|finish) [<questId>]"}, permission = "player.quest", permissionTargeted = "player.quest.others")
+@Command(label = "quest", 
+         aliases = {"q"}, 
+         usage = {"(add|finish) [<questId>]"}, 
+         permission = "player.quest", 
+         permissionTargeted = "player.quest.others")
 public final class QuestCommand implements CommandHandler {
 
     @Override