Implement visualization for G4GenericPolycone

[Yuan-Ru-Lin]

The following code snippet results an error.

using Geant4

det = G4JLDetectorGDML("detector.gdml", validate_schema=false)
_det = GetVolume("Detector")

using GLMakie, Rotations, LinearAlgebra, IGLWrap_jll  ## to force loading G4Vis extension
draw(_det[])

ERROR: UndefVarError: `G4GenericPolycone` not defined in `Geant4`
Suggestion: check for spelling errors or missing imports.
Stacktrace:
 [1] getproperty
   @ ./Base.jl:42 [inlined]
 [2] draw!(s::LScene, lv::Geant4.G4LogicalVolumeDereferenced, t::G4Vis.Transformation3D{Float64}, level::Int64, wireframe::Bool, maxlevel::Int64)
   @ G4Vis ~/.julia/packages/Geant4/zurgD/ext/G4Vis/G4Vis.jl:88
 [3] draw(lv::Geant4.G4LogicalVolumeDereferenced; wireframe::Bool, maxlevel::Int64)
   @ G4Vis ~/.julia/packages/Geant4/zurgD/ext/G4Vis/G4Vis.jl:48
 [4] draw(lv::Geant4.G4LogicalVolumeDereferenced)
   @ G4Vis ~/.julia/packages/Geant4/zurgD/ext/G4Vis/G4Vis.jl:45
 [5] top-level scope
   @ REPL[5]:1

@peremato said that the problem is that the drawing primitives for G4GenericPolycone has not been implemented.

PS the GDML can be accessed at detector.gdml.txt. (Please remove .txt at the end. I added it so that it can be uploaded on GitHub.)

[peremato]

New version 0.2.1 has been released with support for G4GenericPolycone. ec99537