feat: Basic Launcher.OpenUriAsync support on Skia

src/SamplesApp/UITests.Shared/Windows_System/LauncherTests.xaml.cs

@@ -27,7 +27,7 @@ public LauncherTests()
 
 	public class LauncherTestsViewModel : ViewModelBase
 	{
-		private string _uri;
+		private string _uri = "https://platform.uno";
 		private string _error;
 		private LaunchQuerySupportStatus _supportResult;
 

src/Uno.UWP/System/Launcher.Skia.cs

@@ -1,14 +1,22 @@
 using System;
+using System.Diagnostics;
 using System.Threading.Tasks;
-using Uno.Foundation;
 
 namespace Windows.System
 {
 	public static partial class Launcher
 	{
-		public static async Task<bool> LaunchUriPlatformAsync(Uri uri)
+		public static Task<bool> LaunchUriPlatformAsync(Uri uri)
 		{
-			throw new NotImplementedException();
+			var processStartInfo = new ProcessStartInfo(uri.OriginalString)
+			{
+				UseShellExecute = true,
+				Verb = "open"
+			};
+
+			var process = new Process();
+			process.StartInfo = processStartInfo;
+			return Task.FromResult(process.Start());
 		}
 	}
 }

src/Uno.UWP/System/Launcher.cs

@@ -17,7 +17,7 @@ public static partial class Launcher
 
 		public static Task<bool> LaunchUriAsync(Uri uri)
 		{
-#if __IOS__ || __ANDROID__ || __WASM__ || __MACOS__
+#if __IOS__ || __ANDROID__ || __WASM__ || __MACOS__ || __SKIA__
 
 			if (uri == null)
 			{