Improve fillet/chamfer identification algorithm to support selecting edges from face from solid

[bernhard-42]

One of the selection patterns I use is first to select the right face and the edges.

def hook(d, d2, t):
    c1 = CenterArc((0, 0, 0), d + t / 2, 0, 255)
    c2 = CenterArc((d2 + d + t, 0, 0), d2 + t / 2, 180, 270)
    r = Plane.YZ * Pos(d2 + t / 2, 0, d + d2 + t) * Rectangle(t, 1.2 * t)
    h = sweep(r, path=c1 + c2)
    f = h.faces().filter_by(GeomType.PLANE).sort_by(Axis.X)
    e = f[0].edges().filter_by(Axis.Z) + f[-1].edges().filter_by(Axis.Z)
    h = fillet(e, 1)
    return h

h1 = hook(2.05, 8, 3)

If I try this, I get ValueError: 2D fillet operation takes only Vertices.
Kind of clear, because the topo_parent of the edges are faces.

Changing it to

def hook(d, d2, t):
    c1 = CenterArc((0, 0, 0), d + t / 2, 0, 255)
    c2 = CenterArc((d2 + d + t, 0, 0), d2 + t / 2, 180, 270)
    r = Plane.YZ * Pos(d2 + t / 2, 0, d + d2 + t) * Rectangle(t, 1.2 * t)
    h = sweep(r, path=c1 + c2)
    f = h.faces().filter_by(GeomType.PLANE).sort_by(Axis.X)
    e = f[0].edges().filter_by(Axis.Z) + f[-1].edges().filter_by(Axis.Z)
    e[0].topo_parent = f[0].topo_parent
    e[1].topo_parent = f[0].topo_parent
    e[2].topo_parent = f[-1].topo_parent
    e[3].topo_parent = f[-1].topo_parent
    h = fillet(e, 1)
    return h

makes it work.

Roger's comment on Discord:

"I think this could be improved. As you know, the topo_parent is set to whatever Shape the selector was working with so Face.edges() is going to assigned a Face as the parent (which is correct but a bit incomplete). fillet uses this parent to decide if this is a 1, 2 or 3D fillet operation which in this case isn't really what is desired. A more advanced type of fillet identification algorithm should be used here with takes into consideration the object passed to fillet, the listed topo_parent and even the higher level topological parents of the listed topo_parent. This needs to be carefully done though to avoid any negative impacts (like loosing the ability to fillet a Face that was extracted from a Solid)."