Add application wide capture policy

Apps were previously forced to set their allowed capture policy from
either their manifest which is not flexible or from each track which is
a very fine grain but difficult when using libraries like exoplayer.

Thus add an application level policy set with AudioManager.

Test: atest android.media.cts.AudioPlaybackCaptureTest#testCaptureMediaUsage
Bug: 111453086
Change-Id: Id360f1c3f3157c60694c039e51ff16e71d8f93cd
Signed-off-by: Kevin Rocard <krocard@google.com>