Adding a bunch of Agora IO team members to the watch lists

BUG=

Review URL: https://codereview.webrtc.org/1470833002

Cr-Commit-Position: refs/heads/master@{#10765}
diff --git a/AUTHORS b/AUTHORS
index 538b755..c120acc 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -34,6 +34,7 @@
 Victor Costan <costan@gmail.com>
 
 &yet LLC
+Agora IO
 ARM Holdings
 BroadSoft Inc.
 Google Inc.