Add APEX module for permission.

We need an APEX module for permission to reliably roll back runtime
permission state, specifically, platform runtime-permissions.xml will
be moved into the data directory of this APEX and be rolled back when
PermissionController is rolled back.

Bug: 136503238
Test: build
Change-Id: I93166f8dc4783bd09afa6be19a302fb0c2decd0d
diff --git a/apex/permission/OWNERS b/apex/permission/OWNERS
new file mode 100644
index 0000000..957e10a
--- /dev/null
+++ b/apex/permission/OWNERS
@@ -0,0 +1,6 @@
+svetoslavganov@google.com
+moltmann@google.com
+eugenesusla@google.com
+zhanghai@google.com
+evanseverson@google.com
+ntmyren@google.com