[feat:] max courses per semester changeable

MainWindow.axaml

@@ -188,6 +188,11 @@
                                 </StackPanel>
 
                             </Grid>
+                            <Line />
+                            <Grid ColumnDefinitions="*,3*">
+                                <Label  Content="Maximale Sportkursanzahl pro Semester"></Label>
+                                <NumericUpDown Grid.Column="1" x:Name="NudSportMaxPerSemester" ValueChanged="NudSportMaxPerSemester_OnValueChanged"></NumericUpDown>
+                            </Grid>
                         </StackPanel>
                     </Grid>
                 </TabItem>

MainWindow.axaml.cs

@@ -17,6 +17,10 @@ public partial class MainWindow : Window
         Settings.ImportInitial();
         Instance = this;
         RefreshCoursesList();
+        try
+        {
+            NudSportMaxPerSemester.Value = Settings.Instance.NumCoursesPerSemester;
+        } catch {}
     }
 
     private void MnuExpSettings_OnClick(object? sender, RoutedEventArgs e)
@@ -384,4 +388,12 @@ public partial class MainWindow : Window
     {
         // Export as PDF
     }
+
+    private void NudSportMaxPerSemester_OnValueChanged(object? sender, NumericUpDownValueChangedEventArgs e)
+    {
+        try
+        {
+            Settings.Instance.NumCoursesPerSemester = Convert.ToInt32(NudSportMaxPerSemester.Value);
+        } catch {}
+    }
 }