Implemented binary resistances and some more (#18933)

- Fixed possible exploit with tamed pets having template immunities
- Implemented binary resistances
- Corrected resistances calculations
- Pets properly inherit players spell penetration
- Fixed doubled block calculation for damaging melee spells
- Auras removing snare effects will only remove the snaring component
- Shapeshifting will properly remove movement impairing auras only and not crowd control (dragon's breath)
- Immunities are properly checked versus all schools appearing in spell, unit is immune only if immune to all schools
- Spells with melee and magic school mask should compare armor reduction with resistances and select smaller reduction
- Demonic Circle: Teleport no longer removes root effects

(cherrypicked from 93746e8c4a79c8256cd4896533315683f143508c)

src/server/scripts/Spells/spell_rogue.cpp

@@ -699,7 +699,7 @@ class spell_rog_vanish : public SpellScriptLoader
 
                 Unit* target = GetHitUnit();
 
-                target->RemoveMovementImpairingAuras();
+                target->RemoveMovementImpairingAuras(true);
                 target->RemoveAurasByType(SPELL_AURA_MOD_STALKED);
                 if (target->GetTypeId() != TYPEID_PLAYER)
                     return;