[issue40024] Add _PyModule_AddType private helper function

[Dong-hee Na]

New submission from Dong-hee Na <donghee.na92 at gmail.com>:

See: https://github.com/python/cpython/pull/19084#discussion_r395486583

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assignee: corona10
components: C API
messages: 364661
nosy: corona10, vstinner
priority: normal
severity: normal
status: open
title: Add _PyModule_AddType private helper function
type: enhancement
versions: Python 3.9

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<https://bugs.python.org/issue40024>
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