feat(log): 新增支持删除部分日志 add function to delete logs older than specified months

- Add deleteMonthLog functionality to log system
- Create new route and controller method for handling log deletion
- Implement frontend UI and logic for selecting and confirming log deletion-Add necessary database queries to safely delete logs

app/admin/view/system/log/index.html

@@ -2,6 +2,7 @@
     <div class="layuimini-main">
         <table id="currentTable" class="layui-table layui-hide"
                data-auth-record="{:auth('system.log/record')}"
+               data-auth-deleteMonthLog="{:auth('system.log/deleteMonthLog')}"
                lay-filter="currentTable">
         </table>
     </div>