Scripts/Ulduar: Yogg-Saron

Known issues:
- encounter doesn't start immediately after you enter the room, you need to go closer
- players standing outside of the room are not turned Insane after 15 seconds
- encounter resets if the last living player is gripped by Constrictor Tentacle or encased in Hodir's Flash Freeze
- Hodir won't freeze multiple players when they die at the same moment
- Flash Freeze missile (64176) won't hit anybody, probably cast too soon (cosmetic issue)
- there are some unused spells, don't know when or why they should be cast
- some spell animations hit multiple players, but they shouldn't do that

src/server/game/Scripting/ScriptLoader.cpp

@@ -445,6 +445,7 @@ void AddSC_ulduar_teleporter();
 void AddSC_boss_mimiron();
 void AddSC_boss_hodir();
 void AddSC_boss_freya();
+void AddSC_boss_yogg_saron();
 void AddSC_boss_algalon_the_observer();
 void AddSC_instance_ulduar();
 void AddSC_boss_keleseth();              //Utgarde Keep
@@ -1184,6 +1185,7 @@ void AddNorthrendScripts()
     AddSC_boss_mimiron();
     AddSC_boss_hodir();
     AddSC_boss_freya();
+    AddSC_boss_yogg_saron();
     AddSC_boss_algalon_the_observer();
     AddSC_instance_ulduar();
     AddSC_boss_keleseth();              //Utgarde Keep