Create templates/herobot.lua

Following bots use templates herobot:
* Amunra
* Arachna
* Balphagore
* Chronos
* Defiler
* Demented shaman
* Engineer
* Flint
* FA
* Glacius
* Gravekeeper
* Hammerstorm
* Magmus
* Predator
* Revenant
* Rhapsody
* Soulreaper
* Witchslayer
* Wretched Hag