DebugTree constructor
      
      DebugTree({})
     
    
Creates DebugTree with defaults
or with defined printTimeType, logLevels, useColors
Implementation
DebugTree({
  this.printTimeType = timeClockType,
  this.logLevels = defaultLevels,
  bool useColors = false,
}) {
  if (printTimeType == timeElapsedType) {
    _elapsedTimeStopwatch.reset();
    _elapsedTimeStopwatch.start();
  }
  if (useColors) {
    colorizeMap = _defaultColorizeMap;
  }
}