Initial implementation of InitialUserSetter.

Test: atest CarServiceUnitTest:android.car.userlib.InitialUserSetterTest
Bug: 151758646

Change-Id: Idd5fbf939897153dc932ecabbfe0b85849cea27e
diff --git a/user/OWNERS b/user/OWNERS
index 4e8ed97..d5e72a4 100644
--- a/user/OWNERS
+++ b/user/OWNERS
@@ -2,3 +2,5 @@
 ahugh@google.com
 jovanak@google.com
 yizheng@google.com
+felipeal@google.com
+keunyoung@google.com