Add OWNERS in rtc_tools/unpack_aecdump

Bug: webrtc:7494
Change-Id: I45af2f329cbdb965b741faf8e479f67b81b73907
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/274709
Commit-Queue: Alessio Bazzica <alessiob@webrtc.org>
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#38049}
diff --git a/rtc_tools/unpack_aecdump/OWNERS b/rtc_tools/unpack_aecdump/OWNERS
new file mode 100644
index 0000000..3ef4120
--- /dev/null
+++ b/rtc_tools/unpack_aecdump/OWNERS
@@ -0,0 +1,3 @@
+alessiob@webrtc.org
+peah@webrtc.org
+saza@webrtc.org