feat：三个表格添加“上线率”统计

src/views/course/userWatchCourseStatistics/index.vue

@@ -71,6 +71,7 @@
       <el-table-column label="新增会员" align="center" prop="newUserNum" />
       <el-table-column label="会员数量" align="center" prop="userNum" />
       <el-table-column label="观看人数" align="center" prop="watchNum" />
+      <el-table-column label="上线率" align="center" prop="onlineRatePercent" />
       <el-table-column label="完播人数" align="center" prop="completeWatchNum" />
       <el-table-column label="完播率" align="center" prop="completeWatchRatePercent" />
       <el-table-column label="答题人数" align="center" prop="answerNum" />

src/views/course/userWatchCourseTotalStatistics/index.vue

@@ -89,6 +89,7 @@
       <el-table-column label="新增会员" align="center" prop="newUserNum" />
       <el-table-column label="会员数量" align="center" prop="userNum" />
       <el-table-column label="观看人数" align="center" prop="watchNum" />
+      <el-table-column label="上线率" align="center" prop="onlineRatePercent" />
       <el-table-column label="完播人数" align="center" prop="completeWatchNum" />
       <el-table-column label="完播率" align="center" prop="completeWatchRatePercent" />
       <el-table-column label="红包领取个数" align="center" prop="redPacketNum" />