Added function to ProgressBar.java

[Cyb0rk]

Added the option to initzialize via Taskname, Initial value, Progessbar Style and update interval

[ctongfei]

I've decided not to add new constructors -- they are considered a bad design, and are only kept for backward compatibility reasons. You could instead use ProgressBarBuilder with the Java builder pattern:

val pb = new ProgressBarBuilder()
  .setTaskName(taskName)
  .setInitialMax(initialMax)
  .setStyle(style)
  .setUpdateIntervalMillis(time)
  .build()