Camera: Add support for CONTROL_ZOOM_RATIO

- The new zoom API combines optical and digital zoom, and supports both
zoom-out and zoom-in with more precision.
- Support separate zoom ratio ranges for different bokeh modes.

Test: Camera CTS/ITS/CtsVerifier
Bug: 130025314
Bug: 145592831
Change-Id: I4febe047643bfd1ceb398b99cb99f3011e506d88