feat: allow access to the toast config in custom Toast view

[cederache]

Allow get access to the toast config in custom Toast view

[BastiaanJansen]

is there a specific use case where you need the config?

[cederache]

I was trying to replicate the AppleToastView behavior using the config like this :

switch toast.config.direction {
case .bottom:
        bottomAnchor.constraint(equalTo: superview.layoutMarginsGuide.bottomAnchor, constant: 0).isActive = true
case .top:
        topAnchor.constraint(equalTo: superview.layoutMarginsGuide.topAnchor, constant: 0).isActive = true
case .center:
        centerYAnchor.constraint(equalTo: superview.layoutMarginsGuide.centerYAnchor, constant: 0).isActive = true
}