Add OWNERS file for apexkey

Test: none
Bug: 296950573
Change-Id: Id3350c67b799cf3427100225543b0aa570e1d951
diff --git a/apexkey/OWNERS b/apexkey/OWNERS
new file mode 100644
index 0000000..38765f9
--- /dev/null
+++ b/apexkey/OWNERS
@@ -0,0 +1,3 @@
+# Bug component: 296524155
+
+jooyung@google.com