[Gallery] Migrate to WinUI/WinAppSDK

[sakshi173]

Current behavior

Expected behavior

How to reproduce it (as minimally and precisely as possible)

1. Open Uno Gallery APP
2. Click Burger Menu on the left top right.
3. Click "Progress Ring/Bar" from the "Component" list.
4. Observe that 'ProgressRing/Bar' is missing.
5. Click "Lottie" from the "Features" list.
6. Observe that 'Lottie' is missing.

Workaround

No response

Works on UWP/WinUI

No response

Environment

No response

NuGet package version(s)

No response

Affected platforms

iOS, Android

IDE

No response

IDE version

No response

Relevant plugins

No response

Anything else we need to know?

No response

[jeromelaban]

This issue is specific to the canary, and won't be fixed explicitly. The reason for this is the fact that SkiaSharp.Views.Uno does not have a net6-android/ios target (because of mixed net6/xamarin builds complexities), and it is only available on SkiaSharp.Views.Uno.WinUI.

The way forward for this is to migrate the Gallery app to use WinUI/WinAppSDK, so that the net6 targets use the correct SkiaSharp dependency.

[kazo0]

Currently blocking the x64 build because of this

[kazo0]

App fails to build in release for net7.0-ios as a result of dotnet/runtime#90032

Current workaround is to add this to the .Mobile.csproj

<ItemGroup Condition="'$(Configuration)'=='Release'">
	<TrimmableAssembly Include="CommunityToolkit.WinUI.UI" />
</ItemGroup>

[sakshi173]

Verified this issue is fixed, closing it.