gh-131372: Configurable build-details.json name (#150098)

gh-131372: Configurable build-details.json name (#150098)

* Configurable build-details.json name

Linux distributions that co-install multiple Python versions in the same
path (e.g. multiarch on Debian, debug builds, and free-threading) need a
way to place multiple build-details.jsons side-by-side.

PEP-739 is being updated [0] to recommend renaming in this situation. To
ensure some standardization, this PR generates appropriate names for
distributions that need to use this feature.

[0]: https://github.com/python/peps/pull/4889

* NEWS entry

* Document configure option and add to whatsnew