add: 周年纪念日

src/main/java/com/dota/nexus/mapper/AnniversaryMapper.java

@@ -0,0 +1,9 @@
+package com.dota.nexus.mapper;
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import com.dota.nexus.entity.Anniversary;
+import org.apache.ibatis.annotations.Mapper;
+
+@Mapper
+public interface AnniversaryMapper extends BaseMapper<Anniversary> {
+}