Add default code reviewers into OWNERS

Bug: 33166666
Test: gerrit uploader
Change-Id: I7b24a61b21ddddbfd1b858777e3aa86051b3961a
diff --git a/OWNERS b/OWNERS
new file mode 100644
index 0000000..a894355
--- /dev/null
+++ b/OWNERS
@@ -0,0 +1,2 @@
+cmw@google.com
+kudasov@google.com