Add a ViewModel to Dessert Clicker: Android Basics in Compose

[nexussapphire]

buildscript {
   ext {
       ...
       lifecycle_version = '2.5.1'
   }
}

Doesn't work because lifecycle_version isn't declared anywhere. I just put the version at the end of the dependency declaration. I don't think it is covered how to properly handle an undeclared variable in a gradle build script.