inputLine method
Writes an input line with cursor: │ ▶ cursor
Implementation
void inputLine(String text, {bool showCursor = true, String? placeholder}) {
final display = text.isEmpty && placeholder != null
? '${theme.dim}$placeholder${theme.reset}'
: text;
final cursor = showCursor ? '${theme.accent}▌${theme.reset}' : '';
gutterLine('${lb.arrowAccent()} $display$cursor');
}