Deprecate sage.misc.package functions standard_packages, optional_packages, experimental_packages #30747
Description
These functions are superseded by the more general function list_packages.
This is also a step toward deprecating all of sage.misc.package.
CC: @antonio-rojas @jhpalmieri @kiwifb @isuruf
Component: refactoring
Author: Matthias Koeppe
Branch: 8ccc157
Reviewer: John Palmieri
Issue created by migration from https://trac.sagemath.org/ticket/30747