Extracts heads-up/pulsing logic from NotificationEntryManager.

This change introduces the NotificationInterruptionStateProvider
component, which contains all the logic around whether a notification
should heads-up or pulse previously contained in
NotificationEntryManager.

We also introduce the NotificationFilter component which extracts logic
about when to filter notifications from NotificationData, in order to
break a circular dependency that would otherwise be introduced.  As part
of this, some additional fields from the notification ranking map are
denormalized on to the NotificationData.Entry object.

Test: atest SystemUITests, manually
Change-Id: Ic61edca966a3c3e0b01f1a6a9e7ce79c8701da4e