ui: migrate client back to WinForms

-> let's use wine for comatibility again
-> easier to maintain
-> easier to build dynamic options with

ModpackUpdater.Apps/AppGlobals.cs

@@ -0,0 +1,24 @@
+using ModpackUpdater.Apps.Manager;
+using Pilz.UI.WinForms.Telerik.Dialogs;
+using Pilz.UI.WinForms.Telerik.Symbols;
+using Pilz.UI.WinForms.Telerik.Theming;
+using Telerik.WinControls.Themes;
+
+namespace ModpackUpdater.Apps;
+
+public static class AppGlobals
+{
+    public static IRadSymbolFactory<AppSymbols> Symbols { get; } = new AppSymbolFactory();
+
+    public static void Initialize()
+    {
+        ThemeHelper.ApplyApplicationTheme(new ThemeDefinition(ApplicationTheme.Auto, HighContrastMode.Auto), n => n.Theme switch
+        {
+            ApplicationTheme.Light => new Windows11CompactTheme(),
+            ApplicationTheme.Gray or ApplicationTheme.Dark => new Windows11CompactDarkTheme(),
+            _ => throw new NotImplementedException(),
+        });
+        RadFlyoutBase.ConfirmSvg = Symbols.GetSvgImage(AppSymbols.checkmark, Pilz.UI.Symbols.SymbolSize.Small);
+        RadFlyoutBase.CancelSvg = Symbols.GetSvgImage(AppSymbols.cancel, Pilz.UI.Symbols.SymbolSize.Small);
+    }
+}