packageName method
The name of the package of this app with every module among the apps
generated as base: base and the ids of everyModuleWith after it,
such as start_app and start_app_riverpod. So the app keeps its
name when another role gets a second provider, and so do the ids that
come from it, by which an external service may know the app.
Implementation
String packageName(String base) => [base, ...?everyModuleWith].join('_');