* added `showEV100` to user preferences
* integrated EV100 setting to UI
* available for pro
* replaced `IAPProducts.isPurchased` with context extension
* fixed `UserPreferencesProvider` tests
* EV100 -> Ev100
* imlemented `CameraSpotDetector`
* separated generic `DialogSwitch`
* added `CameraFeature` model
* added `CameraFeaturesListTile` to metering section
* added features dialog subtitles
* added long press to remove metering spot
* translations
* hide camera features for purchasable status
* hide `CameraHistogram` & `CameraSpotDetector` if purchasable
* bumped iap version
* fixed tests
* removed redundant camera state emission
* tests
* Fixed remote config initalization
* updated pro features description
- 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
