Summary:
The [PlatformColor PR](https://github.com/facebook/react-native/pull/27908) added support for iOS and Android to express platform specific color values. The primary method for an app to specify such colors is via the `PlatformColor()` method that takes string arguments. The `PlatformColor` method returns an opaque Flow type enforcing that apps use the PlatformColor method instead of creating Objects from scratch -- doing so would make it harder to write static analysis tools around Color values in the future. But in addition to `PlatformColor()`, iOS has a `DynamicColorIOS()` method that takes an Object. The Flow type for this Object cannot be opaque, but we still want to enforce that app code doesn't pass variables instead of Object literals or that values in the Objects are variables. To ensure `DynamicColorIOS()` can be statically analyzed this change adds an ESLint rule to enforce that `DynamicColorIOS()` takes an Object literal of a specific shape. A `ColorAndroid()` was also introduced not for practical use but just to test having platform specific methods for more than one platform in the same app. A second ESLint rule is created for `ColorAndroid` as well.
## Changelog
[General] [Changed] - Add ES Lint rules for `DynamicColorIOS()`and `ColorAndroid()`
Pull Request resolved: https://github.com/facebook/react-native/pull/28398
Test Plan: `yarn lint` passes.
Reviewed By: cpojer
Differential Revision: D20685383
Pulled By: TheSavior
fbshipit-source-id: 9bb37ccc059e74282b119577df0ced63cb9b1f53
602070f44b