Statsd UiEvent logging for notification history.

Events logged:
Notif history on/off/open/close
Notif click (recent/snoozed/older)
Notif delete (older)
Notif package history open/close

Additional background: There are 3 notif history sections: snoozed
notifs, recently dismissed notifs, and older notifs. In the snoozed &
recent sections we still know the notif SBN, so actions on those
events are logged with instance ID. The older-notifs section is
grouped by package, and we no longer know the instance ID.

This change depends on change 11692386 in frameworks/base, which adds
UiEventLogger support for the RankingSelected atom.

Bug: 155061525
Test: Manual (statsd testdrive)
Change-Id: If267fca97c40c1bbd8dfa785814c85927ab36c91