Add CombinatorialPolyhedron method to Polyhedron objects

[kliem]

Implement a method that returns the combinatorial polyhedron object of a polyhedron.

CC: @jplab @LaisRast

Component: geometry

Keywords: polytopes, combinatorial polyhedron

Author: Jonathan Kliem

Branch/Commit: b89610e

Reviewer: Laith Rastanawi

Issue created by migration from https://trac.sagemath.org/ticket/28621

[kliem]

Commit: b89610e

[kliem]

New commits:

b89610e

added combinatorial polyhedron as an attribute for polyhedra

[kliem]

Changed keywords from none to polytopes, combinatorial polyhedron

[kliem]

Branch: public/28621

[jplab]

Description changed:

--- 
+++ 
@@ -1 +1 @@
-Implement a method that returns the combinatorial polyhedron of a polyhedron.
+Implement a method that returns the combinatorial polyhedron object of a polyhedron.

[LaisRast]

comment:3

Looks good.

[LaisRast]

Reviewer: Laith Rastanawi