Add experimental depth stream support

 Configure one depth cloud stream in
 case the camera supports it. In order to
 avoid possible performance degrations
 the depth stream will only get enabled
 and start streaming when all additional
 YUV/RAW streams are disabled.
 Every N-th depth cloud buffer could be stored
 on the sd card if the storage flag is enabled.
 This is an experimental feature that could be
 used as reference on how to work with and
 access data from depth cloud streams.

Bug: 33833999
Test: Manual
Change-Id: I7bb84b038fd444a235910c46fae0e37d799b6fff