Adding Warlock Draconic tank tier 2 / Wicked

[OmegaHelix]

item_sets_pve:

1. Add Warlock Tank Tier 2 2/4/6p set bonuses

Base spell changes:
Death Coil / Drain Life:

1. Use CalcAndDealHealing to trigger OnHealDealt callback

Lifetap:

1. Expose Ranks / Damage values for tier 2p to hit target
2. Add SpellFlagBinary to avoid partial resists
3. Change to OutcomeAlwaysHit so it no longer crits / misses

2/3 lowers dps's dps tests by ~1, expected

action_id:

1. Add (Heal) for clarity, case needed to avoid (??) with death coil / drain life heals