Add NavigationViewViewController skeleton example.

Author: MaximAlien

Navigation-Examples/Constants.swift

@@ -181,5 +181,12 @@ let listOfExamples: [NamedController] = [
         controller: CustomRoutingProviderViewController.self,
         storyboard: nil,
         pushExampleToViewController: true
+    ),
+    (
+        name: "Navigation View",
+        description: "Demonstrates how to use NavigationView.",
+        controller: NavigationViewViewController.self,
+        storyboard: nil,
+        pushExampleToViewController: true
     )
 ]

Navigation-Examples/Examples/Navigation-View.swift

@@ -0,0 +1,33 @@
+import UIKit
+import MapboxCoreNavigation
+import MapboxNavigation
+import MapboxDirections
+
+class NavigationViewViewController: UIViewController {
+    
+    var navigationView: NavigationView!
+    
+    override func viewDidLoad() {
+        super.viewDidLoad()
+    
+        navigationView = NavigationView(frame: view.bounds)
+        navigationView.autoresizingMask = [.flexibleWidth, .flexibleHeight]
+        
+        let navigationViewportDataSource = NavigationViewportDataSource(navigationView.navigationMapView.mapView,
+                                                                        viewportDataSourceType: .raw)
+        navigationView.navigationMapView.navigationCamera.viewportDataSource = navigationViewportDataSource
+        navigationView.navigationMapView.navigationCamera.follow()
+        
+        view.addSubview(navigationView)
+        
+        navigationView.bottomBannerContainerView.isHidden = false
+        navigationView.bottomBannerContainerView.heightAnchor.constraint(equalToConstant: 150.0).isActive = true
+        navigationView.bottomBannerContainerView.backgroundColor = .white
+        navigationView.isBottomBannerContainerViewExpandable = true
+        navigationView.bottomBannerContainerViewOffset = 50.0
+        
+        navigationView.topBannerContainerView.isHidden = false
+        navigationView.topBannerContainerView.heightAnchor.constraint(equalToConstant: 50.0).isActive = true
+        navigationView.topBannerContainerView.backgroundColor = .white
+    }
+}