Add default code reviewers into OWNERS

Bug: 33166666
Test: gerrit uploader
Change-Id: Ifa41d5eaec634d558f3e8f5db46396800f25bd12
diff --git a/OWNERS b/OWNERS
new file mode 100644
index 0000000..3bf0832
--- /dev/null
+++ b/OWNERS
@@ -0,0 +1 @@
+kandoiruchi@google.com