Use lazy_import for module-level import from sage.plot (outside of sage.plot) #32847
Description
... as found by git grep '^from sage.plot.*import'
In Cython files, we move the imports into the methods instead.
Depends on #22081
CC: @orlitzky
Component: refactoring
Author: Matthias Koeppe
Branch/Commit: 6d37580
Reviewer: Michael Orlitzky, Travis Scrimshaw
Issue created by migration from https://trac.sagemath.org/ticket/32847