Generate module.modulemap file when building Mac Framework

Without this file, the Framework can't be used by Swift projects.

Bug: webrtc:9142
Change-Id: I8803ec8b194dc116e133257e205f4620bb34a692
Reviewed-on: https://webrtc-review.googlesource.com/c/103340
Commit-Queue: Patrik Höglund <phoglund@webrtc.org>
Reviewed-by: Patrik Höglund <phoglund@webrtc.org>
Reviewed-by: Anders Carlsson <andersc@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#25047}
diff --git a/AUTHORS b/AUTHORS
index 6b0afd8..e24dd51 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -97,4 +97,5 @@
 Miguel Paris <mparisdiaz@gmail.com>
 Vewd Software AS <*@vewd.com>
 Highfive, Inc. <*@highfive.com>
-CoSMo Software Consulting, Pte Ltd <*@cosmosoftware.io>
\ No newline at end of file
+CoSMo Software Consulting, Pte Ltd <*@cosmosoftware.io>
+Tuple, LLC <*@tuple.app>