pixelRepeat method
Implementation
Pixel pixelRepeat([int times = 1]){
final pureLinedData = times == 1 ? pure : pure.map((expand)=>List.generate(times, (_)=>expand).join()).toList();
final maxLength = pureLinedData.fold<int>(0, (length, line)=>line.length > length ? line.length : length);
return Pixel(size: (width: maxLength, height: pureLinedData.length), data: pureLinedData);
}