init method
void
init()
Implementation
void init() {
/// the project directory is always where the `flutter run` command is executed
/// which is the current directory
Utils.projectDirectory = Platform.environment['CACHED_BUILD_RUNNER_PROJECT_DIRECTORY'] ?? Directory.current.path;
/// let's make the appCacheDirectory if not existing already
Directory(Utils.appCacheDirectory).createSync(recursive: true);
/// init package name of project
Utils.initAppPackageName();
}