Update with recovered code from VM binaries (Jan 1)

Recovered from decompiled OpenMaui.Controls.Linux.dll:
- SkiaShell.cs: FlyoutHeader, FlyoutFooter, scroll support (918 -> 1325 lines)
- X11Window.cs: Cursor support (XCreateFontCursor, XDefineCursor)
- All handlers with dark mode support
- All services with latest implementations
- LinuxApplication with theme change handling

LinuxApplicationOptions.cs

@@ -0,0 +1,20 @@
+namespace Microsoft.Maui.Platform.Linux;
+
+public class LinuxApplicationOptions
+{
+	public string? Title { get; set; } = "MAUI Application";
+
+	public int Width { get; set; } = 800;
+
+	public int Height { get; set; } = 600;
+
+	public bool UseHardwareAcceleration { get; set; } = true;
+
+	public DisplayServerType DisplayServer { get; set; }
+
+	public bool ForceDemo { get; set; }
+
+	public string? IconPath { get; set; }
+
+	public bool UseGtk { get; set; }
+}