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

Services/HotkeyKey.cs

@@ -0,0 +1,76 @@
+namespace Microsoft.Maui.Platform.Linux.Services;
+
+public enum HotkeyKey : uint
+{
+	A = 97u,
+	B = 98u,
+	C = 99u,
+	D = 100u,
+	E = 101u,
+	F = 102u,
+	G = 103u,
+	H = 104u,
+	I = 105u,
+	J = 106u,
+	K = 107u,
+	L = 108u,
+	M = 109u,
+	N = 110u,
+	O = 111u,
+	P = 112u,
+	Q = 113u,
+	R = 114u,
+	S = 115u,
+	T = 116u,
+	U = 117u,
+	V = 118u,
+	W = 119u,
+	X = 120u,
+	Y = 121u,
+	Z = 122u,
+	D0 = 48u,
+	D1 = 49u,
+	D2 = 50u,
+	D3 = 51u,
+	D4 = 52u,
+	D5 = 53u,
+	D6 = 54u,
+	D7 = 55u,
+	D8 = 56u,
+	D9 = 57u,
+	F1 = 65470u,
+	F2 = 65471u,
+	F3 = 65472u,
+	F4 = 65473u,
+	F5 = 65474u,
+	F6 = 65475u,
+	F7 = 65476u,
+	F8 = 65477u,
+	F9 = 65478u,
+	F10 = 65479u,
+	F11 = 65480u,
+	F12 = 65481u,
+	Escape = 65307u,
+	Tab = 65289u,
+	Return = 65293u,
+	Space = 32u,
+	BackSpace = 65288u,
+	Delete = 65535u,
+	Insert = 65379u,
+	Home = 65360u,
+	End = 65367u,
+	PageUp = 65365u,
+	PageDown = 65366u,
+	Left = 65361u,
+	Up = 65362u,
+	Right = 65363u,
+	Down = 65364u,
+	AudioPlay = 269025044u,
+	AudioStop = 269025045u,
+	AudioPrev = 269025046u,
+	AudioNext = 269025047u,
+	AudioMute = 269025042u,
+	AudioRaiseVolume = 269025043u,
+	AudioLowerVolume = 269025041u,
+	Print = 65377u
+}