Add examples project

Examples/WorkingWithUIControls/StartingPoint/Landmarks/Landmarks/Supporting Views/MapView.swift

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+/*
+See LICENSE folder for this sample’s licensing information.
+
+Abstract:
+A view that hosts an `MKMapView`.
+*/
+
+import SwiftUI
+import MapKit
+
+struct MapView: UIViewRepresentable {
+    var coordinate: CLLocationCoordinate2D
+
+    func makeUIView(context: Context) -> MKMapView {
+        MKMapView(frame: .zero)
+    }
+
+    func updateUIView(_ view: MKMapView, context: Context) {
+        let span = MKCoordinateSpan(latitudeDelta: 0.02, longitudeDelta: 0.02)
+        let region = MKCoordinateRegion(center: coordinate, span: span)
+        view.setRegion(region, animated: true)
+    }
+}
+
+#if DEBUG
+struct MapView_Previews: PreviewProvider {
+    static var previews: some View {
+        MapView(coordinate: landmarkData[0].locationCoordinate)
+    }
+}
+#endif