bpo-38352: Add to typing.__all__ (GH-25821) (#25884)

This adds IO, TextIO, BinaryIO, Match, and Pattern.

Co-authored-by: Łukasz Langa <lukasz@langa.pl>
Co-authored-by: Ken Jin <28750310+Fidget-Spinner@users.noreply.github.com>
(cherry picked from commit b11557973476963f7c0fd0041eac175bc0d4c514)
Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>