Closes#18176
* Implemented faction change of Ashtongues when Shade of Akama dies
* Moved factions to black_temple.h
* Removed explicit from EnslavedSoulEvent (Reliquary of Souls)
* Fixed a typo in Skeram Script (followup 5f44890049c3e6b0ee7a11296239f4f1bceb66ec)
* Fixed spell Shadow Inferno (Illidari Nightlord)