Changes for scroll-to-cursor functionality.

RCTTextSelect.h

/**
 * Object containing information about a TextInput's selection.
 */
@interface RCTTextSelection : NSObject

@property (nonatomic, assign, readonly) NSInteger start;
@property (nonatomic, assign, readonly) NSInteger end;
/* >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> */
@property (nonatomic, assign, readonly) CGPoint cursorPosition;

- (instancetype)initWithStart:(NSInteger)start end:(NSInteger)end cursorPosition:(CGPoint)cursorPosition;
/* <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< */

@end