Add a sample for Compose Multiplatform

[Mugurell]

Compose multiplatform is now in alpha - https://blog.jetbrains.com/kotlin/2023/05/compose-multiplatform-for-ios-is-in-alpha/ and we can all use it to simplify and reduce the maintenance costs of not just the functionality but also the UI of cross platform applications.

I'd like to work on adding a new branch to showcase this approach.

[mylockerbiz]

support for desktop and browser would be a fabulous addition. All the samples and instructions are contradictory or fail when compiling.

Desperate for solutions here.