startSpinner method
Implementation
void startSpinner(String message) {
if (silent) return;
_clearSpinner();
final spinner = Spinner(
icon: '🔄',
leftPrompt: (done) => '',
rightPrompt: (done) => done ? ' \x1B[32m✓\x1B[0m $message' : ' $message',
);
_currentSpinner = spinner.interact();
}