add generate modlist feature

ModpackUpdater.Apps.Manager/Program.cs

@@ -1,3 +1,4 @@
+using OfficeOpenXml;
 using Pilz;
 using Pilz.Configuration;
 using Pilz.Plugins.Advanced;
@@ -14,6 +15,7 @@ public static class Program
 
     static Program()
     {
+        ExcelPackage.LicenseContext = LicenseContext.NonCommercial;
         settingsManager = new(GetSettingsPath(), true);
     }