Integration and add heat map demo

- Implemented OpenStreetMap using WebView with Leaflet.js
- Added OpenStreetMapView component with interactive map functionality
- Created heat map visualization with color-coded intensity
- Added 30 dummy location points around San Francisco Bay Area
- Implemented location tracking with real-time pin placement
- Added comprehensive UI with two-row button layout
- Features: Start/Stop tracking, Center map, Demo heat map, Clear demo, Reset map
- Added location count display and confirmation dialogs
- Updated project structure and documentation
- All functionality tested and working on Android emulator

LocationTrackerApp/Views/MainView.xaml.cs

@@ -0,0 +1,26 @@
+using LocationTrackerApp.ViewModels;
+
+namespace LocationTrackerApp.Views;
+
+/// <summary>
+/// Main view for the location tracking application
+/// </summary>
+public partial class MainView : ContentPage
+{
+    /// <summary>
+    /// Initializes a new instance of MainView
+    /// </summary>
+    public MainView()
+    {
+        InitializeComponent();
+    }
+
+    /// <summary>
+    /// Initializes a new instance of MainView with view model
+    /// </summary>
+    /// <param name="viewModel">The view model for this view</param>
+    public MainView(MainViewModel viewModel) : this()
+    {
+        BindingContext = viewModel;
+    }
+}