CODEOWNERS: Become a typing code owner (GH-98480)

(cherry picked from commit cb93b4aee5eb12dc6c4b2dccc81a2e5ace3ea4de)

Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>
diff --git a/.github/CODEOWNERS b/.github/CODEOWNERS
index 227fd2b..3d39e0c 100644
--- a/.github/CODEOWNERS
+++ b/.github/CODEOWNERS
@@ -133,7 +133,7 @@
 
 **/*idlelib*                  @terryjreedy
 
-**/*typing*                   @gvanrossum @Fidget-Spinner @JelleZijlstra
+**/*typing*                   @gvanrossum @Fidget-Spinner @JelleZijlstra @AlexWaygood
 
 **/*asyncore                  @giampaolo
 **/*asynchat                  @giampaolo