Define a Scatterer from another scatterer and just override some values

It is common to want to work with multiple scatterers that are largely similar, differing in only small ways, say position or rotation.

It would be useful to be able to do something like
s1 = Sphere(n=1.59, r = .5, center = (5, 5, 5))
s2 = scatterer_like(s1, center = (4, 4, 4))

We could also do something like
s2 = s1.make_copy(center = (4, 4, 4))