* use latest `camera_android_camerax`
* fixed trailing commas
* moved ci/cd to 3.13.9
* removed focus & exposure fix
* fixed camera not being initialized on Android
* removed unused import
- Fixed test coverage calculation
- Removed `mockito` from the application mock
- Implemented platform channel mocks to mimic incident light metering
- Covered providers with unit tests
- Covered metering screen pickers with widget tests
- Laid foundation for integration tests