dividerWithText static method
Display a divider with text
Implementation
static void dividerWithText(String text) {
final width = terminalWidth;
final padding = (width - text.length - 4) ~/ 2;
final left = '─' * padding;
final right = '─' * (width - text.length - 4 - padding);
stdout.writeln('$left $text $right');
}