[Library] Coordination library (#15)

This PR contains the work done to implement the necessary protocols and router to implement the Coordinators pattern in the app.

Reviewed-on: rock-n-code/app-reviews#15
Co-authored-by: Javier Cicchelli <javier@rock-n-code.com>
Co-committed-by: Javier Cicchelli <javier@rock-n-code.com>

Libraries/Coordination/Test/Helpers/Routers/SpyRouter.swift

@@ -0,0 +1,46 @@
+//
+//  SpyRouter.swift
+//  ReviewsCoordinationTest
+//
+//  Created by Javier Cicchelli on 21/03/2024.
+//  Copyright © 2024 Röck+Cöde. All rights reserved.
+//
+
+import ReviewsCoordinationKit
+import UIKit
+
+final class SpyRouter: Router {
+    
+    // MARK: Properties
+    var animated: Bool?
+    var onDismiss: OnDismissClosure?
+    var state: State = .initialised
+    var viewController: UIViewController?
+
+    // MARK: Functions
+    func present(
+        _ viewController: UIViewController,
+        animated: Bool,
+        onDismiss: OnDismissClosure?
+    ) {
+        self.viewController = viewController
+        self.animated = animated
+        self.onDismiss = onDismiss
+        self.state = .presented
+    }
+    
+    func dismiss(animated: Bool) {
+        self.animated = animated
+        self.state = .dismissed
+    }
+    
+}
+
+// MARK: - Enumerations
+extension SpyRouter {
+    enum State {
+        case initialised
+        case presented
+        case dismissed
+    }
+}