[Desktop] Provide a unified way to set title bar to light/dark color according to system/user choice

[sunny-chung]

I would like to make the background color of the window title bar matches system setting (dark / light mode).

For Mac, we can set via a system property apple.awt.application.appearance. For Windows, we seems have to dive into Swing's Look And Feel. As a cross-platform UI framework, could Jetpack Compose Desktop unify and provide an easy way to configure this? This would make the produced application looks more professional.

[pjBooms]

Relates to #169

[igordmn]

The same issue, but with suggestion to make it default: https://github.com/JetBrains/compose-multiplatform/issues/4393

[okushnikov]

Please check the following ticket on YouTrack for follow-ups to this issue. GitHub issues will be closed in the coming weeks.