feat(iOS): added lineBreakStrategy attribute to Text/TextInput (#31272)

Summary:
iOS did not support the implementation of Korean word-wrap(line-break) before iOS14.
If the attribute applied, the word-wrap of Korean will works.

## Changelog

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[iOS] [Added] -  Line break strategy for Text and TextInput components

Pull Request resolved: https://github.com/facebook/react-native/pull/31272

Test Plan:
1. Test build and run on above iOS 14.
2. Test it does not affect existing text components when set default(none) strategy.
3. Test whether word-wrap works with Korean when set hangul-word strategy.

<img src="https://user-images.githubusercontent.com/26326015/112963967-d7f70c00-9182-11eb-9a34-8c758b80c219.png" width="300" height="" style="max-width:100%;">

Reviewed By: javache

Differential Revision: D39824809

Pulled By: lunaleaps

fbshipit-source-id: 42cb0385221a38c84e80d3494d1bfc1934ecf32b

Libraries/Text/TextProps.js

@@ -236,4 +236,11 @@ export type TextProps = $ReadOnly<{|
    * See https://reactnative.dev/docs/text#supperhighlighting
    */
   suppressHighlighting?: ?boolean,
+
+  /**
+   * Set line break strategy on iOS.
+   *
+   * See https://reactnative.dev/docs/text.html#linebreakstrategyios
+   */
+  lineBreakStrategyIOS?: ?('none' | 'standard' | 'hangul-word' | 'push-out'),
 |}>;