add maintenance mode & improve & bugfixing

ModpackUpdater/UpdateCheckOptionsAdv.cs

@@ -0,0 +1,10 @@
+using ModpackUpdater.Manager;
+
+namespace ModpackUpdater;
+
+public class UpdateCheckOptionsAdv : UpdateCheckOptions
+{
+    public string ProfileFolder { get; set; }
+    public string ModpackConfig { get; set; }
+    public bool NoUpdate { get; set; }
+}