Added Accessibility Feature for RN to support Smart Inversion for photos

Summary:
@public
Added a property `accessibilityIgnoresInvertColors (boolean)`  to Views which allows the Apple API `accessibilityIgnoresInvertColors` to be used in React Native.
Now, when a user has Display: Smart Invert enabled, you can set the property to be true, and things like photos and views with the property set to true will no longer be inverted when Smart Invert is enabled.

This property can also be applied to the Image Component.

Example Use Case:

```
<Image accessibilityIgnoresInvertColors={true} />
```
```
<View accessibilityIgnoresInvertColors={true} />
```

| Before | After |
| ------ | ----- |
| ![original](https://user-images.githubusercontent.com/165856/41738737-b62c6ebc-7547-11e8-8ea3-f82239998071.jpg) | ![feeditem](https://user-images.githubusercontent.com/165856/41738749-beef6de2-7547-11e8-9771-b44e513de0fd.jpg)

Reviewed By: PeteTheHeat

Differential Revision: D8549084

fbshipit-source-id: 82a3bc73c9e6d75d6b50ba013b88127f07692641

Libraries/Components/View/ViewPropTypes.js

@@ -87,6 +87,7 @@ export type ViewProps = $ReadOnly<{|
   accessibilityComponentType?: AccessibilityComponentType,
   accessibilityLiveRegion?: 'none' | 'polite' | 'assertive',
   importantForAccessibility?: 'auto' | 'yes' | 'no' | 'no-hide-descendants',
+  accessibilityIgnoresInvertColors?: boolean,
   accessibilityTraits?: AccessibilityTrait | Array<AccessibilityTrait>,
   accessibilityViewIsModal?: boolean,
   accessibilityElementsHidden?: boolean,

React/Views/RCTViewManager.m

@@ -104,6 +104,7 @@ - (RCTShadowView *)shadowView
 #endif
 
 RCT_EXPORT_VIEW_PROPERTY(nativeID, NSString)
+RCT_EXPORT_VIEW_PROPERTY(accessibilityIgnoresInvertColors, BOOL)
 
 // Acessibility related properties
 RCT_REMAP_VIEW_PROPERTY(accessible, reactAccessibilityElement.isAccessibilityElement, BOOL)