In Game Timer
 

I'm looking for an in game stopwatch kind of thing that will run independently of any fights.

Something I can click on to start it, then click it again to reset it to zero but keep counting for ability tracking (IE Treasure Storm for all Laethys phases). So, treasure storm casts, bam, I click button to start timer. Once it goes off again, bam, I click button to start timer at zero again.