camera: Add physical camera metadata in CaptureResult

- When physical stream of a logical multi-camera is requested, HAL needs
to generate metadata for the physical cameras.
- In case no physical stream is requested for the logical multi-camera, no
capture result metadata is required for physical camera.
- Batch physical and logical metadata within one capture_result call.

Test: testLogicalCamera CTS test
Bug: 64691172
Change-Id: Id040620f3f0c350711d49341ab31ab88ecd94888