Add OWNERS file for app/communal.

This directory was added by lusila@ in ag/16006734. Adding an OWNERS
doesn't bypass API council requirement; It just helps with the +2.

Test: none

Ignore-AOSP-First: Feature not yet in AOSP.

Change-Id: I7e2f2d0ad44a325b25eebfa0e18777e137274817
1 file changed