Accept types.ModuleType as a distribution identifier

[FFY00]

I have recently ran into the issue where the importable module did not come from the distribution metadata found by importlib.metadata. This was because the distribution modules were shadowed in sys.path, which can happen often in test environments.

It would be nice if we could pass a module to importlib.metadata.distribution(), and have it find the distribution where that module originates from, if any.