Unique models for scenario heroes (Tieru and Agbet)

I fixed the mod. Agbeth now receives quests. The hero model for Agbeth replaces the standard Warlock model in the campaign video. Thanks to fktifzobr@mail.ru for this. A nice bonus: if you use the Maps_ToE_UnlockAllHeroes mod, the unique models for Agbeth and Tieru will remain on multiplayer maps. Also, a version with standard texture sizes is available.