Add API to interactors that are required for implementing the 2-line bouncer messages.

The subsequent CLs in this chain use the properties added here.

Bug: 299343534
Flag: ACONFIG com.android.systemui.compose_bouncer DEVELOPMENT
Test: added unit tests for all the interactors.
Change-Id: Ie5d5931386597406d28932d055421e15afe65574