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

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

Co-authored-by: Ɓukasz 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>
diff --git a/Lib/typing.py b/Lib/typing.py
index ff96434..301a477 100644
--- a/Lib/typing.py
+++ b/Lib/typing.py
@@ -99,6 +99,13 @@
     'NamedTuple',  # Not really a type.
     'TypedDict',  # Not really a type.
     'Generator',
+ 
+    # Other concrete types.
+    'BinaryIO',
+    'IO',
+    'Match',
+    'Pattern',
+    'TextIO',
 
     # One-off things.
     'AnyStr',