Enable watchos target for the Counter sample after Kotlin 1.5.31 update

[arkivanov]

The Counter sample has watchos targets temporary disabled, due to KT-48613.

[plusmobileapps]

Is there anything stopping this work of updating the project to kotlin 1.6.0 to fix the sample? Jetpack compose compiler?

[arkivanov]

I will do the update in the coming days. There are also some changes in the library, that we can do. E.g. probably we can remove the -jetpack module, because the -jetbrains can now be used instead. And the latter should be renamed in this case.

[arkivanov]

I filed a separate issue for the Kotlin version update: #5