instantiate view controller from storyboard

UIViewController+Storyboard.swift

// Assuming you use one storyboard per view controller 

extension UIViewController {
    
    static func fromStoryboard() -> Self {
        let name = String(describing: Self.self)
        let sb = UIStoryboard(name: name, bundle: nil)
        return sb.instantiateViewController(identifier: name) as! Self
    }
}