feat: 优化excel操作

Yi.Furion.Net6/Yi.Framework.Module/Excel/ExcelManager.cs

@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Yi.Framework.Module.Excel
+{
+    public class ExcelManager
+    {
+    }
+}