Port WinUI C++ code to Uno Platform C#. Supports full control porting and snippet/incremental porting.
$npx -y skills add unoplatform/uno --skill winui-portInstalls into the current project.
Run `npx skills use "https://github.com/unoplatform/uno" --skill "unoplatform/uno/winui-port"` and follow the generated skill instructions now. Read its complete output, redirecting it to a temporary file first if necessary. Resolve relative paths from the supporting-files directory it provides.
Use the skills in "https://github.com/unoplatform/uno" that are relevant to the current task. Run `npx skills add "https://github.com/unoplatform/uno"` and select the relevant skills, then follow their instructions.