Global rework of Heigan encounter

* Global rework of Heigan the Unclean encounter in Naxxramas
- Fix many timers
- Fix taunt yells
- Fix death yell
- Remove WotLK content (skill and emotes)
- Properly implement players teleport (correct logic and spell)
- Full rework of eruption mechanic with use of proper spells and timers
- Fix Heigan movement when switching between ground and plateform
- Properly handle entrance door closure/opening

To do: take care of the eye stalk tunnel

Sources:
Sniffs
https://youtu.be/wcHcHTAGGso
https://youtu.be/prxuYSeT0AA
https://youtu.be/x6RSI3Zd-zY

sql/scriptdev2/scriptdev2.sql

@@ -3512,7 +3512,7 @@ INSERT INTO script_texts (entry,content_default,sound,type,language,emote,commen
 (-1533115,'Soon... the world will tremble!',8832,1,0,0,'heigan SAY_TAUNT3'),
 (-1533116,'The end is upon you.',8833,1,0,0,'heigan SAY_CHANNELING'),
 (-1533117,'Hungry worms will feast on your rotten flesh!',8834,1,0,0,'heigan SAY_TAUNT4'),
-(-1533118,'Noo... o...',8828,1,0,0,'heigan SAY_DEATH'),
+(-1533118,'%s takes is last breath.',0,2,0,0,'heigan EMOTE_DEATH'),
 
 (-1533119,'%s spots a nearby zombie to devour!',0,2,0,0,'gluth EMOTE_ZOMBIE'),