Implemented the NavigationRouter router in the Coordination library.

Libraries/Coordination/Kit/Sources/Routers/NavigationRouter.swift

@@ -0,0 +1,55 @@
+//
+//  NavigationRouter.swift
+//  ReviewsCoordinationKit
+//
+//  Created by Javier Cicchelli on 21/03/2024.
+//  Copyright © 2024 Röck+Cöde. All rights reserved.
+//
+
+import UIKit
+
+public class NavigationRouter: NSObject {
+    
+    // MARK: Properties
+    var navigationController: UINavigationController
+    var onDismissForViewController: [UIViewController: Router.OnDismissClosure] = [:]
+    
+    // MARK: Initialisers
+    init(navigationController: UINavigationController) {
+        self.navigationController = navigationController
+        
+        super.init()
+        
+        self.navigationController.delegate = self
+    }
+    
+    // MARK: Functions
+    func performOnDismiss(for viewController: UIViewController) {
+        guard let onDismiss = onDismissForViewController[viewController] else {
+            return
+        }
+        
+        onDismiss()
+        
+        onDismissForViewController[viewController] = nil
+    }
+    
+}
+
+// MARK: - UINavigationControllerDelegate
+extension NavigationRouter: UINavigationControllerDelegate {
+    
+    // MARK: Functions
+    public func navigationController(
+        _ navigationController: UINavigationController,
+        didShow viewController: UIViewController,
+        animated: Bool
+    ) {
+        guard let viewControllerToDismiss = navigationController.transitionCoordinator?.viewController(forKey: .from) else {
+            return
+        }
+        
+        performOnDismiss(for: viewControllerToDismiss)
+    }
+    
+}