Add iOS 12 textContentType options (#21079)

Summary:
Adding the new `textContentType` options from iOS 12. `newPassword` helps the OS know to put a password field into the keychain, and `oneTimeCode` hints that the field will take input from an SMS one time code.
Pull Request resolved: https://github.com/facebook/react-native/pull/21079

Differential Revision: D9813328

Pulled By: TheSavior

fbshipit-source-id: d2c04b41121b32f185af38ea4c642924e261a043

Libraries/Components/TextInput/TextInput.js

@@ -155,6 +155,8 @@ type IOSProps = $ReadOnly<{|
     | 'telephoneNumber'
     | 'username'
     | 'password'
+    | 'newPassword'
+    | 'oneTimeCode'
   ),
   scrollEnabled?: ?boolean,
 |}>;
@@ -778,6 +780,8 @@ const TextInput = createReactClass({
       'telephoneNumber',
       'username',
       'password',
+      'newPassword',
+      'oneTimeCode',
     ]),
   },
   getDefaultProps(): Object {