Add trace for AccessibilityInteractionClient callback interfaces.

In an effort to reduce unnecessary String operations and Binder calls
from AccessibilityInteractionClient, also add channels to propagate
tracing state to AccessibilityInteractionClient through
AccessibilityManager.

Bug: 157601519
Test: adb shell cmd accessibility start-trace
      adb shell cmd accessibility stop-trace
Change-Id: Idfe220bc64a9c83679201b9a9a36b1c492f9d6cc