libcamera: Move out of android namespace.

C++ namespace android:: is reserved for base Google Android types to avoid
current and further conflicts with 3rd party code. Having Camera HAL under
namespace android:: violates this rule, adding potential conflicts.

Change-Id: I37dfe633b1c2dda3bd8e56ef35c8a73a9c93517d
libcamera: Add support for continuous auto focus.

Change-Id: Ie20e566f1ee5ed70cf427e1ff099cd9b4cdb469f