[Prc] Clockwork Virtuoso

[paigeoliver]

I am in agreement on the change from Craft: Constructs to Craft:Clockwork. I am also in agreement on the changing of the 5th level class ability name. I will make those changes in my final version.

Clockwork robots are somewhat weaker than Effigies are (but more open to customization) and this class loses 3 caster levels (for a caster) rather than the single level lost by the effigy master, so I don't think it will turn out to be overpowered.

Also, thanks a lot for your help.