feat(tournaments): 增加 competition_bg 字段查询支持

在 TournamentsMapper.xml 中的两个查询语句中新增了 competition_bg 字段，
以支持赛事背景图的展示需求。

ruoyi-modules/ruoyi-system/src/main/resources/mapper/business/TournamentsMapper.xml

@@ -10,11 +10,11 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
 
 
     <select id="selectTournamentsVoList" resultType="org.dromara.business.domain.vo.TournamentsVo">
-        SELECT id, name, start_time, end_time,game_type, starting_chips, level_duration, late_registration_level, max_players, status, created_at, updated_at,sign_time,competition_icon,tournaments_bi_id,robot_count,is_delete,delay_card_time,delay_card_num,action_time FROM tournaments  ${ew.customSqlSegment}
+        SELECT id, name, start_time, end_time,game_type, starting_chips, level_duration, late_registration_level, max_players, status, created_at, updated_at,sign_time,competition_icon,tournaments_bi_id,robot_count,is_delete,delay_card_time,delay_card_num,action_time,competition_bg FROM tournaments  ${ew.customSqlSegment}
     </select>
 
     <select id="selectVoByIdInfo" resultType="org.dromara.business.domain.vo.TournamentsVo">
-       SELECT id, name, start_time, end_time,game_type, starting_chips, level_duration, late_registration_level, max_players, status, created_at, updated_at,sign_time,competition_icon,tournaments_bi_id,robot_count,is_delete,delay_card_time,delay_card_num,action_time FROM tournaments WHERE id =  #{id}
+       SELECT id, name, start_time, end_time,game_type, starting_chips, level_duration, late_registration_level, max_players, status, created_at, updated_at,sign_time,competition_icon,tournaments_bi_id,robot_count,is_delete,delay_card_time,delay_card_num,action_time,competition_bg FROM tournaments WHERE id =  #{id}
     </select>