Merge pull request unoplatform#15183 from unoplatform/dev/ds/winui-de…

…faults

Adding Manifest defaults for WinUI

src/Uno.Sdk/Sdk/Sdk.targets

@@ -68,6 +68,18 @@ Copyright (C) Uno Platform Inc. All rights reserved.
 				<EnableWindowsTargeting Condition=" $(EnableWindowsTargeting) == '' ">true</EnableWindowsTargeting>
 			</PropertyGroup>
 
+			<PropertyGroup Condition="$(SingleProject)!='true' and $(OutputType)=='WinExe'">
+				<ApplicationManifest Condition=" $(ApplicationManifest) == '' ">app.manifest</ApplicationManifest>
+				<Platforms Condition=" $(Platforms) == '' ">x86;x64;arm64</Platforms>
+				<PublishProfile Condition=" $(PublishProfile) == '' ">win-$(Platform).pubxml</PublishProfile>
+				<UseWinUI Condition=" $(UseWinUI) == '' ">true</UseWinUI>
+			</PropertyGroup>
+
+			<ItemGroup Condition="$(SingleProject)!='true' and $(OutputType)=='WinExe'">
+				<!-- Exclude Manifest items that have already been added to avoid duplicates -->
+				<Manifest Include="$(ApplicationManifest)" Exclude="@(Manifest)" />
+			</ItemGroup>
+
 			<!--
 				Defining the "Msix" ProjectCapability here allows the Single-project MSIX Packaging
 				Tools extension to be activated for this project even if the Windows App SDK Nuget