Add automotive related keys to AIDL.

This CL adds a new automotive metadata section with below fields:
- AUTOMOTIVE_LOCATION describes where the camera exists.
- AUTOMOTIVE_LENS_FACING tells where the camera's lens is facing toward.

These were added to the temporary HIDL interface but not AIDL.

Bug: 223262543

Test: build

Change-Id: Id074c6878690767c89792f867a7754ae8193405d
Signed-off-by: Jayant Chowdhary <jchowdhary@google.com>