Initial commit of new camera API, mostly just the interface.

- New core API classes in
- and classes for
  application access to direct hardware image buffers.
- Additions to to describe new image
  types needed by new camera API.
- Some documentation included; very little implementation.

Bug: 9111736
Change-Id: I0680f35944d1cb8845b7dc0c67edc8c0f0864573
16 files changed