Create (geometric) PolyhedralComplex, whose cells are Sage Polyhedra.

CC: @mkoeppe @jhpalmieri @jplab @tscrim

Component: geometry

Keywords: polyhedral complex

Author: Yuan Zhou

Branch/Commit: 32d34b7

Reviewer: John Palmieri, Travis Scrimshaw

Issue created by migration from https://trac.sagemath.org/ticket/31748