Give arcfiends underfloor wire vision

[Vulwin_Gilran]

Pretty simple, I think arcfiends should be able to see underfloor wires. Probably would be nice to be something which can be toggled.

I just find it funny that some arcfiends end up using a T-ray scanner to find wires for wirehopping, I feel it would be better if it was just something they could do rather than needing to rely on a tool. Could probably be the same range of wire vision you get while actually in the wires.