Camera2: Add API to expose all physical camera metadata

Give the app ability to query all the physical camera's physical
metadata within TotalCaptureResult.

With this new API, getPhysicalCameraKey becomes redundant.

Test: Camera ITS for logical multi-camera
Bug: 66697407
Change-Id: I4a0cbc81bef705e870f7e4ec79dc3481f9e87ae6
3 files changed