Add OWNERS file to new jank package

Adding owners file to new jank package. This package will house the
code for tracking and reporting application jank.

Bug: 364727734
Test: N/A only adding OWNERS.
Flag: EXEMPT only changing OWNERS
Change-Id: Ibd4b723ea2588e10cb3c2fe233d2a3e2c2f70668
1 file changed