Add viewmodel snippet

Author: mlykotom

kmp/kmp-shared/src/commonMain/kotlin/com/example/kmp/kmp_shared/MainViewModel.kt

@@ -4,7 +4,7 @@ import androidx.lifecycle.ViewModel
 import androidx.lifecycle.viewmodel.initializer
 import androidx.lifecycle.viewmodel.viewModelFactory
 
-
+// [START android_kmp_viewmodel_class]
 class MainViewModel(
     private val repository: DataRepository,
 ) : ViewModel() { /* some logic */ }
@@ -17,6 +17,7 @@ val mainViewModelFactory = viewModelFactory {
 }
 
 fun getDataRepository(): DataRepository = TODO()
+// [END android_kmp_viewmodel_class]
 
 
 class DataRepository