Update how Influences are handled

[Regisle]

This prevents you setting eldritch influences (eater/exarch) onto items that it cannot go on (with the exception of eternal struggle)

This also adds support for Astrolabe Amulet's Has Elder, Shaper and all Conqueror Influences implict

I may extend this to allow all eater/exarch mods onto amulets now that the influence cant be applied, which would make it so eternal struggle wouldnt need variants generated, or I might generate all the variants, depending on what maintainer prefers