feat(ExtraDevice): 添加外部设备管理功能

- 创建了 ExtraDeviceController 提供分页查询外部设备列表的API接口
- 新增 ExtraDeviceService 和 ExtraDeviceServiceImpl 实现设备查询逻辑
- 添加 ExtraDevicePageQueryReq 和 ExtraDeviceRespVO 请求响应数据模型
- 扩展 ExtraDeviceMapper 支持分页查询外部设备列表
- 实现景区名称填充和设备在线状态判断功能
- 集成 Redis 获取设备心跳时间判断在线状态
- 添加了完整的参数校验和异常处理机制

src/main/resources/mapper/ExtraDeviceMapper.xml

@@ -4,8 +4,24 @@
     <select id="listExtraDeviceByScenicId" resultType="com.ycwl.basic.model.pc.device.resp.DeviceRespVO">
         select d.id, d.ident as no, d.scenic_id, d.name, d.status
         from extra_device d
-                 
+
         where d.scenic_id = #{scenicId}
           and d.status = 1
     </select>
+
+    <select id="pageQuery" resultType="com.ycwl.basic.model.pc.extraDevice.resp.ExtraDeviceRespVO">
+        select
+            d.id,
+            d.scenic_id as scenicId,
+            d.name,
+            d.ident,
+            d.status
+        from extra_device d
+        <where>
+            <if test="scenicId != null">
+                and d.scenic_id = #{scenicId}
+            </if>
+        </where>
+        order by d.id desc
+    </select>
 </mapper>