SwiftUI live preview for UIKit apps

SwiftUIPreviewForUIKit.swift

#if DEBUG
import SwiftUI

struct <#ViewController#>Presentable: UIViewControllerRepresentable {
    func updateUIViewController(_ uiViewController: UIViewControllerType, context: Context) {
        
    }
    
    @available(iOS 13.0, *)
    func makeUIViewController(context: Context) -> UIViewController {
        <#ViewController#>()
    }
}

@available(iOS 13.0, *)
struct <#ViewController#>Preview: PreviewProvider {
    static var previews: some View {
        <#ViewController#>Presentable()
    }
}

#endif