execute method

Implementation

@override
Future<void> execute() async {
  print("""List of available commands\n
  init: Initialize the structure of an existing project. Example: cubit init
  create screen: Generate a single screen (page) for your application. Example: cubit create screen <screen_name>
  create screens: Generate multiple screens (pages) for your application. Example: cubit create screens screen_1 screen_2 ... screen_n
  help: Display this help message\n\n""");
}