audioplay is initialized with an example of the type of clip it
will play.
Also remove asserts and debug compile settings from BootAnimation.
BUG:24800792
Change-Id: Icb78489417aee0549c340c746b25e57ccdb3427e
Respects dnd settings for sound playback.
Basic implementation uses in-memory wavs as buffers.
audioplay::playClip should not be called before previous clip ends.
Updated FORMAT.md to reflect no more audio_conf.txt
Bug: 29055299
Change-Id: Ifc358d7c85f11b8b54ae6446c40643b87bc567f2