Deprecate global imports of CombinatorialObject, CombinatorialClass, MapCombinatorialClass #33384
Description
Part of #12913 (Meta-ticket: Deprecate CombinatorialClass in favor of the EnumeratedSet's categories)
CC: @tscrim @fchapoton
Component: combinatorics
Author: Matthias Koeppe
Branch/Commit: u/mkoeppe/deprecate_global_imports_of_combinatorialobject__combinatorialclass__mapcombinatorialclass @ 1d3a09b
Issue created by migration from https://trac.sagemath.org/ticket/33384