seek method
Seek forward by offset in microseconds (use negative value to seek backward)
Implementation
Future<bool> seek(int offsetMicroseconds, [String? player]) async {
final offset = offsetMicroseconds > 0
? '+$offsetMicroseconds'
: offsetMicroseconds.toString();
final args = player != null
? ['--player=$player', 'position', offset]
: ['position', offset];
return _executor.executeCommandWithArgs(args);
}