Add `_interpreters` module for 3.13
Add the new _interpreters module in preparation of Python 3.13.
CC: @AlexWaygood
According to mypy_primer, this change has no effect on the checked open source code. 🤖🎉
According to mypy_primer, this change has no effect on the checked open source code. 🤖🎉
According to mypy_primer, this change has no effect on the checked open source code. 🤖🎉
According to mypy_primer, this change has no effect on the checked open source code. 🤖🎉
According to mypy_primer, this change has no effect on the checked open source code. 🤖🎉