SkadaHealAbsorbs

Adds a new module to Skada that tracks absorbs (Power Word: Shield, Divine Aegis, etc). While Skada comes with a basic absorb tracker, its a bit lacking. It doesn't offer enough information, and it requires you to switch back and forth between the absorb module and the healing module to fully evaluate the healing done. This module displays absorbs and heals in the same window. It tracks all heals/absorbs on a spell and player basis, and it calculates total healing done, percentage of total healing, and heals per second.