Fix UIImage orientation

UIImage+FixOrientation.swift

extension UIImage {    
    var fixOrientationTransform: CGAffineTransform {
        let angle = CGFloat((imageOrientation.rawValue & 2) >> 1 - ((imageOrientation.rawValue & 1) << 1)) * .pi / 2
        let flipX = CGFloat(1 - ((imageOrientation.rawValue & 4) >> 1))
        return CGAffineTransform(scaleX: flipX, y: 1).rotated(by: angle)
    }
}