Add out-of-memory (OOM) kills to ApplicationExitInfo

Adding the capability to track processes that have been affected by the
OOM killer.

Test: Trigger OOM kill and verify `noteAppKill()` is called with the matching OOM victim data.
Bug: 244232958
Bug: 234500267
Change-Id: I7e948a7826751a5a6f64f9ac9614864b3632fb4e
Merged-In: I7e948a7826751a5a6f64f9ac9614864b3632fb4e