Reports invalid uses of lazy imports introduced by PEP 810.

The following uses are flagged:

• a lazy import placed inside a function, class, or try body — lazy imports must appear at the module level;
• lazy from ... import * — star imports cannot be lazy;
• lazy from __future__ import ... — __future__ imports cannot be lazy.

Example:

def f():
    lazy import os  # lazy imports must appear at module level