[chore:] added link to git

MainWindow.axaml.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Diagnostics;
 using System.IO;
 using System.Threading.Tasks;
 using Avalonia.Controls;
@@ -74,19 +75,25 @@ public partial class MainWindow : Window
         throw new NotImplementedException();
     }
 
-    private void MnuSettings_OnClick(object? sender, RoutedEventArgs e)
-    {
-        throw new NotImplementedException();
-    }
-
     private void MnuHelp_OnClick(object? sender, RoutedEventArgs e)
     {
         throw new NotImplementedException();
     }
 
-    private void MnuGithub_OnClick(object? sender, RoutedEventArgs e)
+    private void MnuGit_OnClick(object? sender, RoutedEventArgs e)
     {
-        throw new NotImplementedException();
+        try
+        {
+            Process.Start(new ProcessStartInfo
+            {
+                FileName = "https://git.mypapercloud.de/fierke/logofclient",
+                UseShellExecute = true // Wichtig für Plattformübergreifendes Öffnen
+            });
+        }
+        catch (Exception ex)
+        {
+            Console.WriteLine($"Fehler beim Öffnen des Links: {ex.Message}");
+        }
     }
 
     private async void BtnChooseFile_OnClick(object? sender, RoutedEventArgs e)