Add reverse functionality to repeat() of AnimationController (#25125)

diff --git a/AUTHORS b/AUTHORS
index f033b44..265c7da 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -34,4 +34,5 @@
 Mattijs Fuijkschot <mattijs.fuijkschot@gmail.com>
 TruongSinh Tran-Nguyen <i@truongsinh.pro>
 Sander Dalby Larsen <srdlarsen@gmail.com>
-Marco Scannadinari <m@scannadinari.co.uk>
\ No newline at end of file
+Marco Scannadinari <m@scannadinari.co.uk>
+Frederik Schweiger <mail@flschweiger.net>