Add chapter 10 sample project

Chapter10/TemplateStudioSampleApp/ViewModels/ListDetailsViewModel.cs

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+using System.Collections.ObjectModel;
+
+using CommunityToolkit.Mvvm.ComponentModel;
+
+using TemplateStudioSampleApp.Contracts.ViewModels;
+using TemplateStudioSampleApp.Core.Contracts.Services;
+using TemplateStudioSampleApp.Core.Models;
+
+namespace TemplateStudioSampleApp.ViewModels;
+
+public partial class ListDetailsViewModel : ObservableRecipient, INavigationAware
+{
+    private readonly ISampleDataService _sampleDataService;
+
+    [ObservableProperty]
+    private SampleOrder? selected;
+
+    public ObservableCollection<SampleOrder> SampleItems { get; private set; } = new ObservableCollection<SampleOrder>();
+
+    public ListDetailsViewModel(ISampleDataService sampleDataService)
+    {
+        _sampleDataService = sampleDataService;
+    }
+
+    public async void OnNavigatedTo(object parameter)
+    {
+        SampleItems.Clear();
+
+        // TODO: Replace with real data.
+        var data = await _sampleDataService.GetListDetailsDataAsync();
+
+        foreach (var item in data)
+        {
+            SampleItems.Add(item);
+        }
+    }
+
+    public void OnNavigatedFrom()
+    {
+    }
+
+    public void EnsureItemSelected()
+    {
+        Selected ??= SampleItems.First();
+    }
+}