Create Hippogryph.lua

3 PHs for Heliodromos NMs

if any of them are killed it will reset the spawn timer
Create Heliodromos.lua

Sets time of death for Heliodromos NMs

Also sets a despawn condition for 10 minutes after the death of any of the 3 NMs
Update Zone.lua

added initial variable for Heliodromos
Merge pull request #138 from Vanion-/patch-3

Create Hippogryph.lua and Heliodromos.lua